java : logger les paamètres d'un preparedStatement

La technique consiste a wrapper et implémenter l'interface PreparedStatement. Le wrapper va construire la chaine au fur et a mesure des setXXX


// $Id$
package com.edf.iece.base.config;

import java.net.URL;

import java.sql.Connection;
import java.sql.ParameterMetaData;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import java.util.ArrayList;
import java.util.Date;
import java.util.StringTokenizer;


/**
* A LoggableStatement is a {@link java.sql.PreparedStatement PreparedStatement}
* with added logging capability.
*

* In addition to the methods declared in PreparedStatement,
* LoggableStatement provides a method {@link #getQueryString} which can be
* used to get the query string in a format
* suitable for logging.
*
* @author Jens Wyke (jens.wyke@se.ibm.com)
*
*/
public class LoggableStatement
implements PreparedStatement {
//~ Variables membres //////////////////////////////////////////////////////////////////////////////////////////////

/**
* used for storing parameter values needed for producing log
*/
private ArrayList parameterValues;

/**
*the query string with question marks as parameter placeholders
*/
private String sqlTemplate;

/**
* a statement created from a real database connection
*/
private PreparedStatement wrappedStatement;

//~ Constructeurs //////////////////////////////////////////////////////////////////////////////////////////////////

/**
* Constructs a LoggableStatement.
*
* Creates {@link java.sql.PreparedStatement PreparedStatement}
* with the query string sql using
* the specified connection by calling {@link java.sql.Connection#prepareStatement(String)}.
*


* Whenever a call is made to this LoggableStatement it is forwarded to the prepared
* statment created from
* connection after first saving relevant parameters for use in logging output.
*
* @param connection a JDBC-connection to be used for
* obtaining a "real statement"
* @param sql thw sql to exectute
* @exception SQLException if a PreparedStatement cannot be created
* using the supplied connection and sql
*/
public LoggableStatement (Connection connection, String sql)
throws SQLException {
wrappedStatement = connection.prepareStatement(sql);
sqlTemplate = sql;
parameterValues = new ArrayList();
}

//~ Méthodes ///////////////////////////////////////////////////////////////////////////////////////////////////////

/**
* JDBC 2.0
*
* Adds a set of parameters to the batch.
*
* @exception SQLException if a database access error occurs
* @see Statement#addBatch
*/
public void addBatch ()
throws java.sql.SQLException {
wrappedStatement.addBatch();
}


/**
* JDBC 2.0
*
* Adds a SQL command to the current batch of commmands for the statement.
* This method is optional.
*
* @param sql typically this is a static SQL INSERT or UPDATE statement
* @exception SQLException if a database access error occurs, or the
* driver does not support batch statements
*/
public void addBatch (String sql)
throws java.sql.SQLException {
wrappedStatement.addBatch(sql);
}


/**
* Cancels this Statement object if both the DBMS and
* driver support aborting an SQL statement.
* This method can be used by one thread to cancel a statement that
* is being executed by another thread.
*
* @exception SQLException if a database access error occurs
*/
public void cancel ()
throws SQLException {
wrappedStatement.cancel();
}


/**
* JDBC 2.0
*
* Makes the set of commands in the current batch empty.
* This method is optional.
*
* @exception SQLException if a database access error occurs or the
* driver does not support batch statements
*/
public void clearBatch ()
throws java.sql.SQLException {
wrappedStatement.clearBatch();
}


/**
* Clears the current parameter values immediately.
*

In general, parameter values remain in force for repeated use of a
* Statement. Setting a parameter value automatically clears its
* previous value. However, in some cases it is useful to immediately
* release the resources used by the current parameter values; this can
* be done by calling clearParameters.
*
* @exception SQLException if a database access error occurs
*/
public void clearParameters ()
throws java.sql.SQLException {
wrappedStatement.clearParameters();
}


/**
* Clears all the warnings reported on this Statement
* object. After a call to this method,
* the method getWarnings will return
* null until a new warning is reported for this Statement.
*
* @exception SQLException if a database access error occurs
*/
public void clearWarnings ()
throws java.sql.SQLException {
wrappedStatement.clearWarnings();
}


/**
* Releases this Statement object's database
* and JDBC resources immediately instead of waiting for
* this to happen when it is automatically closed.
* It is generally good practice to release resources as soon as
* you are finished with them to avoid tying up database
* resources.
*

Note: A Statement is automatically closed when it is
* garbage collected. When a Statement is closed, its current
* ResultSet, if one exists, is also closed.
*
* @exception SQLException if a database access error occurs
*/
public void close ()
throws java.sql.SQLException {
wrappedStatement.close();
}


/**
* Executes any kind of SQL statement.
* Some prepared statements return multiple results; the execute
* method handles these complex statements as well as the simpler
* form of statements handled by executeQuery and executeUpdate.
*
* @exception SQLException if a database access error occurs
* @return renvoi le code d'execution
* @see Statement#execute
*/
public boolean execute ()
throws java.sql.SQLException {
return wrappedStatement.execute();
}


/**
* Executes a SQL statement that may return multiple results.
* Under some (uncommon) situations a single SQL statement may return
* multiple result sets and/or update counts. Normally you can ignore
* this unless you are (1) executing a stored procedure that you know may
* return multiple results or (2) you are dynamically executing an
* unknown SQL string. The methods execute,
* getMoreResults, getResultSet,
* and getUpdateCount let you navigate through multiple results.
*
* The execute method executes a SQL statement and indicates the
* form of the first result. You can then use getResultSet or
* getUpdateCount to retrieve the result, and getMoreResults to
* move to any subsequent result(s).
*
* @param sql any SQL statement
* @return true if the next result is a ResultSet; false if it is
* an update count or there are no more results
* @exception SQLException if a database access error occurs
* @see #getResultSet
* @see #getUpdateCount
* @see #getMoreResults
*/
public boolean execute (String sql)
throws java.sql.SQLException {
return wrappedStatement.execute(sql);
}


/**
* JDBC 2.0
*
* Submits a batch of commands to the database for execution.
* This method is optional.
*
* @return an array of update counts containing one element for each
* command in the batch. The array is ordered according
* to the order in which commands were inserted into the batch.
* @exception SQLException if a database access error occurs or the
* driver does not support batch statements
*/
public int[] executeBatch ()
throws java.sql.SQLException {
return wrappedStatement.executeBatch();
}


/**
* Executes the SQL query in this PreparedStatement object
* and returns the result set generated by the query.
*
* @return a ResultSet that contains the data produced by the
* query; never null
* @exception SQLException if a database access error occurs
*/
public java.sql.ResultSet executeQuery ()
throws java.sql.SQLException {
return wrappedStatement.executeQuery();
}


/**
* Executes a SQL statement that returns a single ResultSet.
*
* @param sql typically this is a static SQL SELECT statement
* @return a ResultSet that contains the data produced by the
* query; never null
* @exception SQLException if a database access error occurs
*/
public java.sql.ResultSet executeQuery (String sql)
throws java.sql.SQLException {
return wrappedStatement.executeQuery(sql);
}


/**
* Executes the SQL INSERT, UPDATE or DELETE statement
* in this PreparedStatement object.
* In addition,
* SQL statements that return nothing, such as SQL DDL statements,
* can be executed.
*
* @return either the row count for INSERT, UPDATE or DELETE statements;
* or 0 for SQL statements that return nothing
* @exception SQLException if a database access error occurs
*/
public int executeUpdate ()
throws java.sql.SQLException {
return wrappedStatement.executeUpdate();
}


/**
* Executes an SQL INSERT, UPDATE or DELETE statement. In addition,
* SQL statements that return nothing, such as SQL DDL statements,
* can be executed.
*
* @param sql a SQL INSERT, UPDATE or DELETE statement or a SQL
* statement that returns nothing
* @return either the row count for INSERT, UPDATE or DELETE or 0
* for SQL statements that return nothing
* @exception SQLException if a database access error occurs
*/
public int executeUpdate (String sql)
throws java.sql.SQLException {
return wrappedStatement.executeUpdate(sql);
}


/**
* JDBC 2.0
*
* Returns the Connection object
* that produced this Statement object.
* @return the connection that produced this statement
* @exception SQLException if a database access error occurs
*/
public java.sql.Connection getConnection ()
throws java.sql.SQLException {
return wrappedStatement.getConnection();
}


/**
* JDBC 2.0
*
* Retrieves the direction for fetching rows from
* database tables that is the default for result sets
* generated from this Statement object.
* If this Statement object has not set
* a fetch direction by calling the method setFetchDirection,
* the return value is implementation-specific.
*
* @return the default fetch direction for result sets generated
* from this Statement object
* @exception SQLException if a database access error occurs
*/
public int getFetchDirection ()
throws java.sql.SQLException {
return wrappedStatement.getFetchDirection();
}


/**
* JDBC 2.0
*
* Retrieves the number of result set rows that is the default
* fetch size for result sets
* generated from this Statement object.
* If this Statement object has not set
* a fetch size by calling the method setFetchSize,
* the return value is implementation-specific.
* @return the default fetch size for result sets generated
* from this Statement object
* @exception SQLException if a database access error occurs
*/
public int getFetchSize ()
throws java.sql.SQLException {
return wrappedStatement.getFetchSize();
}


/**
* Returns the maximum number of bytes allowed
* for any column value.
* This limit is the maximum number of bytes that can be
* returned for any column value.
* The limit applies only to BINARY,
* VARBINARY, LONGVARBINARY, CHAR, VARCHAR, and LONGVARCHAR
* columns. If the limit is exceeded, the excess data is silently
* discarded.
*
* @return the current max column size limit; zero means unlimited
* @exception SQLException if a database access error occurs
*/
public int getMaxFieldSize ()
throws java.sql.SQLException {
return wrappedStatement.getMaxFieldSize();
}


/**
* Retrieves the maximum number of rows that a
* ResultSet can contain. If the limit is exceeded, the excess
* rows are silently dropped.
*
* @return the current max row limit; zero means unlimited
* @exception SQLException if a database access error occurs
*/
public int getMaxRows ()
throws java.sql.SQLException {
return wrappedStatement.getMaxRows();
}


/**
* JDBC 2.0
*
* Gets the number, types and properties of a ResultSet's columns.
*
* @return the description of a ResultSet's columns
* @exception SQLException if a database access error occurs
*/
public java.sql.ResultSetMetaData getMetaData ()
throws java.sql.SQLException {
return wrappedStatement.getMetaData();
}


/**
* Moves to a Statement's next result. It returns true if
* this result is a ResultSet. This method also implicitly
* closes any current ResultSet obtained with getResultSet.
*
* There are no more results when (!getMoreResults() &&
* (getUpdateCount() == -1)
*
* @return true if the next result is a ResultSet; false if it is
* an update count or there are no more results
* @exception SQLException if a database access error occurs
* @see #execute
*/
public boolean getMoreResults ()
throws java.sql.SQLException {
return wrappedStatement.getMoreResults();
}


/**
* Retrieves the number of seconds the driver will
* wait for a Statement to execute. If the limit is exceeded, a
* SQLException is thrown.
*
* @return the current query timeout limit in seconds; zero means unlimited
* @exception SQLException if a database access error occurs
*/
public int getQueryTimeout ()
throws java.sql.SQLException {
return wrappedStatement.getQueryTimeout();
}


/**
* Returns the current result as a ResultSet object.
* This method should be called only once per result.
*
* @return the current result as a ResultSet; null if the result
* is an update count or there are no more results
* @exception SQLException if a database access error occurs
* @see #execute
*/
public java.sql.ResultSet getResultSet ()
throws java.sql.SQLException {
return wrappedStatement.getResultSet();
}


/**
* JDBC 2.0
*
* Retrieves the result set concurrency.
* @return le nombre de resultat impacte
* @throws SQLException erreur SQL
*/
public int getResultSetConcurrency ()
throws java.sql.SQLException {
return wrappedStatement.getResultSetConcurrency();
}


/**
* JDBC 2.0
*
* Determine the result set type.
* @return le nombre de resultat impacte
* @throws SQLException erreur SQL
*
*/
public int getResultSetType ()
throws java.sql.SQLException {
return wrappedStatement.getResultSetType();
}


/**
* Returns the current result as an update count;
* if the result is a ResultSet or there are no more results, -1
* is returned.
* This method should be called only once per result.
*
* @return the current result as an update count; -1 if it is a
* ResultSet or there are no more results
* @exception SQLException if a database access error occurs
* @see #execute
*/
public int getUpdateCount ()
throws java.sql.SQLException {
return wrappedStatement.getUpdateCount();
}


/**
* Retrieves the first warning reported by calls on this Statement.
* Subsequent Statement warnings will be chained to this
* SQLWarning.
*
*

The warning chain is automatically cleared each time
* a statement is (re)executed.
*
*

Note: If you are processing a ResultSet, any
* warnings associated with ResultSet reads will be chained on the
* ResultSet object.
*
* @return the first SQLWarning or null
* @exception SQLException if a database access error occurs
*/
public java.sql.SQLWarning getWarnings ()
throws java.sql.SQLException {
return wrappedStatement.getWarnings();
}


/**
* JDBC 2.0
*
* Sets an Array parameter.
*
* @param i the first parameter is 1, the second is 2, ...
* @param x an object representing an SQL array
* @exception SQLException if a database access error occurs
*/
public void setArray (int i, java.sql.Array x)
throws java.sql.SQLException {
wrappedStatement.setArray(i, x);
saveQueryParamValue(i, x);
}


/**
* Sets the designated parameter to the given input stream, which will have
* the specified number of bytes.
* When a very large ASCII value is input to a LONGVARCHAR
* parameter, it may be more practical to send it via a
* java.io.InputStream. JDBC will read the data from the stream
* as needed, until it reaches end-of-file. The JDBC driver will
* do any necessary conversion from ASCII to the database char format.
*
*

Note: This stream object can either be a standard
* Java stream object or your own subclass that implements the
* standard interface.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the Java input stream that contains the ASCII parameter value
* @param length the number of bytes in the stream
* @exception SQLException if a database access error occurs
*/
public void setAsciiStream (int parameterIndex, java.io.InputStream x, int length)
throws java.sql.SQLException {
wrappedStatement.setAsciiStream(parameterIndex, x, length);
saveQueryParamValue(parameterIndex, x);
}


/**
* Sets the designated parameter to a java.lang.BigDecimal value.
* The driver converts this to an SQL NUMERIC value when
* it sends it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setBigDecimal (int parameterIndex, java.math.BigDecimal x)
throws java.sql.SQLException {
wrappedStatement.setBigDecimal(parameterIndex, x);
saveQueryParamValue(parameterIndex, x);
}


/**
* Sets the designated parameter to the given input stream, which will have
* the specified number of bytes.
* When a very large binary value is input to a LONGVARBINARY
* parameter, it may be more practical to send it via a
* java.io.InputStream. JDBC will read the data from the stream
* as needed, until it reaches end-of-file.
*
*

Note: This stream object can either be a standard
* Java stream object or your own subclass that implements the
* standard interface.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the java input stream which contains the binary parameter value
* @param length the number of bytes in the stream
* @exception SQLException if a database access error occurs
*/
public void setBinaryStream (int parameterIndex, java.io.InputStream x, int length)
throws java.sql.SQLException {
wrappedStatement.setBinaryStream(parameterIndex, x, length);
saveQueryParamValue(parameterIndex, x);
}


/**
* JDBC 2.0
*
* Sets a BLOB parameter.
*
* @param i the first parameter is 1, the second is 2, ...
* @param x an object representing a BLOB
* @exception SQLException if a database access error occurs
*/
public void setBlob (int i, java.sql.Blob x)
throws java.sql.SQLException {
wrappedStatement.setBlob(i, x);
saveQueryParamValue(i, x);
}


/**
* Sets the designated parameter to a Java boolean value. The driver converts this
* to an SQL BIT value when it sends it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setBoolean (int parameterIndex, boolean x)
throws java.sql.SQLException {
wrappedStatement.setBoolean(parameterIndex, x);
saveQueryParamValue(
parameterIndex,
new Boolean(x));
}


/**
* Sets the designated parameter to a Java byte value. The driver converts this
* to an SQL TINYINT value when it sends it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setByte (int parameterIndex, byte x)
throws java.sql.SQLException {
wrappedStatement.setByte(parameterIndex, x);
saveQueryParamValue(
parameterIndex,
new Integer(x));
}


/**
* Sets the designated parameter to a Java array of bytes. The driver converts
* this to an SQL VARBINARY or LONGVARBINARY (depending on the
* argument's size relative to the driver's limits on VARBINARYs)
* when it sends it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setBytes (int parameterIndex, byte[] x)
throws java.sql.SQLException {
wrappedStatement.setBytes(parameterIndex, x);
saveQueryParamValue(parameterIndex, x);
}


/**
* JDBC 2.0
*
* Sets the designated parameter to the given Reader
* object, which is the given number of characters long.
* When a very large UNICODE value is input to a LONGVARCHAR
* parameter, it may be more practical to send it via a
* java.io.Reader. JDBC will read the data from the stream
* as needed, until it reaches end-of-file. The JDBC driver will
* do any necessary conversion from UNICODE to the database char format.
*
*

Note: This stream object can either be a standard
* Java stream object or your own subclass that implements the
* standard interface.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param reader the java reader which contains the UNICODE data
* @param length the number of characters in the stream
* @exception SQLException if a database access error occurs
*/
public void setCharacterStream (int parameterIndex, java.io.Reader reader, int length)
throws java.sql.SQLException {
wrappedStatement.setCharacterStream(parameterIndex, reader, length);
saveQueryParamValue(parameterIndex, reader);
}


/**
* JDBC 2.0
*
* Sets a CLOB parameter.
*
* @param i the first parameter is 1, the second is 2, ...
* @param x an object representing a CLOB
* @exception SQLException if a database access error occurs
*/
public void setClob (int i, java.sql.Clob x)
throws java.sql.SQLException {
wrappedStatement.setClob(i, x);
saveQueryParamValue(i, x);
}


/**
* Defines the SQL cursor name that will be used by
* subsequent Statement execute methods. This name can then be
* used in SQL positioned update/delete statements to identify the
* current row in the ResultSet generated by this statement. If
* the database doesn't support positioned update/delete, this
* method is a noop. To insure that a cursor has the proper isolation
* level to support updates, the cursor's SELECT statement should be
* of the form 'select for update ...'. If the 'for update' phrase is
* omitted, positioned updates may fail.
*
*

Note: By definition, positioned update/delete
* execution must be done by a different Statement than the one
* which generated the ResultSet being used for positioning. Also,
* cursor names must be unique within a connection.
*
* @param name the new cursor name, which must be unique within
* a connection
* @exception SQLException if a database access error occurs
*/
public void setCursorName (String name)
throws java.sql.SQLException {
wrappedStatement.setCursorName(name);
}


/**
* Sets the designated parameter to a java.sql.Date value. The driver converts this
* to an SQL DATE value when it sends it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setDate (int parameterIndex, java.sql.Date x)
throws java.sql.SQLException {
wrappedStatement.setDate(parameterIndex, x);
saveQueryParamValue(parameterIndex, x);
}


/**
* JDBC 2.0
*
* Sets the designated parameter to a java.sql.Date value,
* using the given Calendar object. The driver uses
* the Calendar object to construct an SQL DATE,
* which the driver then sends to the database. With a
* a Calendar object, the driver can calculate the date
* taking into account a custom timezone and locale. If no
* Calendar object is specified, the driver uses the default
* timezone and locale.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @param cal the Calendar object the driver will use
* to construct the date
* @exception SQLException if a database access error occurs
*/
public void setDate (int parameterIndex, java.sql.Date x, java.util.Calendar cal)
throws java.sql.SQLException {
wrappedStatement.setDate(parameterIndex, x, cal);
saveQueryParamValue(parameterIndex, x);
}


/**
* Sets the designated parameter to a Java double value. The driver converts this
* to an SQL DOUBLE value when it sends it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setDouble (int parameterIndex, double x)
throws java.sql.SQLException {
wrappedStatement.setDouble(parameterIndex, x);
saveQueryParamValue(
parameterIndex,
new Double(x));
}


/**
* Sets escape processing on or off.
* If escape scanning is on (the default), the driver will do
* escape substitution before sending the SQL to the database.
*
* Note: Since prepared statements have usually been parsed prior
* to making this call, disabling escape processing for prepared
* statements will have no effect.
*
* @param enable true to enable; false to disable
* @exception SQLException if a database access error occurs
*/
public void setEscapeProcessing (boolean enable)
throws java.sql.SQLException {
wrappedStatement.setEscapeProcessing(enable);
}


/**
* JDBC 2.0
*
* Gives the driver a hint as to the direction in which
* the rows in a result set
* will be processed. The hint applies only to result sets created
* using this Statement object. The default value is
* ResultSet.FETCH_FORWARD.
*

Note that this method sets the default fetch direction for
* result sets generated by this Statement object.
* Each result set has its own methods for getting and setting
* its own fetch direction.
* @param direction the initial direction for processing rows
* @exception SQLException if a database access error occurs
* or the given direction
* is not one of ResultSet.FETCH_FORWARD, ResultSet.FETCH_REVERSE, or
* ResultSet.FETCH_UNKNOWN
*/
public void setFetchDirection (int direction)
throws java.sql.SQLException {
wrappedStatement.setFetchDirection(direction);
}


/**
* JDBC 2.0
*
* Gives the JDBC driver a hint as to the number of rows that should
* be fetched from the database when more rows are needed. The number
* of rows specified affects only result sets created using this
* statement. If the value specified is zero, then the hint is ignored.
* The default value is zero.
*
* @param rows the number of rows to fetch
* @exception SQLException if a database access error occurs, or the
* condition 0 <= rows <= this.getMaxRows() is not satisfied.
*/
public void setFetchSize (int rows)
throws java.sql.SQLException {
wrappedStatement.setFetchSize(rows);
}


/**
* Sets the designated parameter to a Java float value. The driver converts this
* to an SQL FLOAT value when it sends it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setFloat (int parameterIndex, float x)
throws java.sql.SQLException {
wrappedStatement.setFloat(parameterIndex, x);
saveQueryParamValue(
parameterIndex,
new Float(x));
}


/**
* Sets the designated parameter to a Java int value. The driver converts this
* to an SQL INTEGER value when it sends it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setInt (int parameterIndex, int x)
throws java.sql.SQLException {
wrappedStatement.setInt(parameterIndex, x);
saveQueryParamValue(
parameterIndex,
new Integer(x));
}


/**
* Sets the designated parameter to a Java long value. The driver converts this
* to an SQL BIGINT value when it sends it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setLong (int parameterIndex, long x)
throws java.sql.SQLException {
wrappedStatement.setLong(parameterIndex, x);
saveQueryParamValue(
parameterIndex,
new Long(x));
}


/**
* Sets the limit for the maximum number of bytes in a column to
* the given number of bytes. This is the maximum number of bytes
* that can be returned for any column value. This limit applies
* only to BINARY, VARBINARY, LONGVARBINARY, CHAR, VARCHAR, and
* LONGVARCHAR fields. If the limit is exceeded, the excess data
* is silently discarded. For maximum portability, use values
* greater than 256.
*
* @param max the new max column size limit; zero means unlimited
* @exception SQLException if a database access error occurs
*/
public void setMaxFieldSize (int max)
throws java.sql.SQLException {
wrappedStatement.setMaxFieldSize(max);
}


/**
* Sets the limit for the maximum number of rows that any
* ResultSet can contain to the given number.
* If the limit is exceeded, the excess
* rows are silently dropped.
*
* @param max the new max rows limit; zero means unlimited
* @exception SQLException if a database access error occurs
*/
public void setMaxRows (int max)
throws java.sql.SQLException {
wrappedStatement.setMaxRows(max);
}


/**
* Sets the designated parameter to SQL NULL.
*
*

Note: You must specify the parameter's SQL type.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param sqlType the SQL type code defined in java.sql.Types
* @exception SQLException if a database access error occurs
*/
public void setNull (int parameterIndex, int sqlType)
throws java.sql.SQLException {
wrappedStatement.setNull(parameterIndex, sqlType);
saveQueryParamValue(parameterIndex, null);
}


/**
* JDBC 2.0
*
* Sets the designated parameter to SQL NULL. This version of setNull should
* be used for user-named types and REF type parameters. Examples
* of user-named types include: STRUCT, DISTINCT, JAVA_OBJECT, and
* named array types.
*
*

Note: To be portable, applications must give the
* SQL type code and the fully-qualified SQL type name when specifying
* a NULL user-defined or REF parameter. In the case of a user-named type
* the name is the type name of the parameter itself. For a REF
* parameter the name is the type name of the referenced type. If
* a JDBC driver does not need the type code or type name information,
* it may ignore it.
*
* Although it is intended for user-named and Ref parameters,
* this method may be used to set a null parameter of any JDBC type.
* If the parameter does not have a user-named or REF type, the given
* typeName is ignored.
*
*
* @param paramIndex the first parameter is 1, the second is 2, ...
* @param sqlType a value from java.sql.Types
* @param typeName the fully-qualified name of an SQL user-named type,
* ignored if the parameter is not a user-named type or REF
* @exception SQLException if a database access error occurs
*/
public void setNull (int paramIndex, int sqlType, String typeName)
throws java.sql.SQLException {
wrappedStatement.setNull(paramIndex, sqlType, typeName);
saveQueryParamValue(paramIndex, null);
}


/**
*

Sets the value of a parameter using an object; use the
* java.lang equivalent objects for integral values.
*
*

The JDBC specification specifies a standard mapping from
* Java Object types to SQL types. The given argument java object
* will be converted to the corresponding SQL type before being
* sent to the database.
*
*

Note that this method may be used to pass datatabase-
* specific abstract data types, by using a Driver-specific Java
* type.
*
* If the object is of a class implementing SQLData,
* the JDBC driver should call its method writeSQL to write it
* to the SQL data stream.
* If, on the other hand, the object is of a class implementing
* Ref, Blob, Clob, Struct,
* or Array, then the driver should pass it to the database as a value of the
* corresponding SQL type.
*
* This method throws an exception if there is an ambiguity, for example, if the
* object is of a class implementing more than one of those interfaces.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the object containing the input parameter value
* @exception SQLException if a database access error occurs
*/
public void setObject (int parameterIndex, Object x)
throws java.sql.SQLException {
wrappedStatement.setObject(parameterIndex, x);
saveQueryParamValue(parameterIndex, x);
}


/**
* Sets the value of the designated parameter with the given object.
* This method is like setObject above, except that it assumes a scale of zero.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the object containing the input parameter value
* @param targetSqlType the SQL type (as defined in java.sql.Types) to be
* sent to the database
* @exception SQLException if a database access error occurs
*/
public void setObject (int parameterIndex, Object x, int targetSqlType)
throws java.sql.SQLException {
wrappedStatement.setObject(parameterIndex, x, targetSqlType);
saveQueryParamValue(parameterIndex, x);
}


/**
*

Sets the value of a parameter using an object. The second
* argument must be an object type; for integral values, the
* java.lang equivalent objects should be used.
*
*

The given Java object will be converted to the targetSqlType
* before being sent to the database.
*
* If the object has a custom mapping (is of a class implementing SQLData),
* the JDBC driver should call its method writeSQL to write it
* to the SQL data stream.
* If, on the other hand, the object is of a class implementing
* Ref, Blob, Clob, Struct,
* or Array, the driver should pass it to the database as a value of the
* corresponding SQL type.
*
*

Note that this method may be used to pass datatabase-
* specific abstract data types.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the object containing the input parameter value
* @param targetSqlType the SQL type (as defined in java.sql.Types) to be
* sent to the database. The scale argument may further qualify this type.
* @param scale for java.sql.Types.DECIMAL or java.sql.Types.NUMERIC types,
* this is the number of digits after the decimal point. For all other
* types, this value will be ignored.
* @exception SQLException if a database access error occurs
* @see Types
*/
public void setObject (int parameterIndex, Object x, int targetSqlType, int scale)
throws java.sql.SQLException {
wrappedStatement.setObject(parameterIndex, x, targetSqlType, scale);
saveQueryParamValue(parameterIndex, x);
}


/**
* Sets the number of seconds the driver will
* wait for a Statement to execute to the given number of seconds.
* If the limit is exceeded, a SQLException is thrown.
*
* @param seconds the new query timeout limit in seconds; zero means
* unlimited
* @exception SQLException if a database access error occurs
*/
public void setQueryTimeout (int seconds)
throws java.sql.SQLException {
wrappedStatement.setQueryTimeout(seconds);
}


/**
* JDBC 2.0
*
* Sets a REF(<structured-type>) parameter.
*
* @param i the first parameter is 1, the second is 2, ...
* @param x an object representing data of an SQL REF Type
* @exception SQLException if a database access error occurs
*/
public void setRef (int i, java.sql.Ref x)
throws java.sql.SQLException {
wrappedStatement.setRef(i, x);
saveQueryParamValue(i, x);
}


/**
* Sets the designated parameter to a Java short value. The driver converts this
* to an SQL SMALLINT value when it sends it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setShort (int parameterIndex, short x)
throws java.sql.SQLException {
wrappedStatement.setShort(parameterIndex, x);
saveQueryParamValue(
parameterIndex,
new Integer(x));
}


/**
* Sets the designated parameter to a Java String value. The driver converts this
* to an SQL VARCHAR or LONGVARCHAR value (depending on the argument's
* size relative to the driver's limits on VARCHARs) when it sends
* it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setString (int parameterIndex, String x)
throws java.sql.SQLException {
wrappedStatement.setString(parameterIndex, x);
saveQueryParamValue(parameterIndex, x);
}


/**
* Sets the designated parameter to a java.sql.Time value. The driver converts this
* to an SQL TIME value when it sends it to the database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setTime (int parameterIndex, java.sql.Time x)
throws java.sql.SQLException {
wrappedStatement.setTime(parameterIndex, x);
saveQueryParamValue(parameterIndex, x);
}


/**
* JDBC 2.0
*
* Sets the designated parameter to a java.sql.Time value,
* using the given Calendar object. The driver uses
* the Calendar object to construct an SQL TIME,
* which the driver then sends to the database. With a
* a Calendar object, the driver can calculate the time
* taking into account a custom timezone and locale. If no
* Calendar object is specified, the driver uses the default
* timezone and locale.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @param cal the Calendar object the driver will use
* to construct the time
* @exception SQLException if a database access error occurs
*/
public void setTime (int parameterIndex, java.sql.Time x, java.util.Calendar cal)
throws java.sql.SQLException {
wrappedStatement.setTime(parameterIndex, x, cal);
saveQueryParamValue(parameterIndex, x);
}


/**
* Sets the designated parameter to a java.sql.Timestamp value. The driver
* converts this to an SQL TIMESTAMP value when it sends it to the
* database.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @exception SQLException if a database access error occurs
*/
public void setTimestamp (int parameterIndex, java.sql.Timestamp x)
throws java.sql.SQLException {
wrappedStatement.setTimestamp(parameterIndex, x);
saveQueryParamValue(parameterIndex, x);
}


/**
* JDBC 2.0
*
* Sets the designated parameter to a java.sql.Timestamp value,
* using the given Calendar object. The driver uses
* the Calendar object to construct an SQL TIMESTAMP,
* which the driver then sends to the database. With a
* a Calendar object, the driver can calculate the timestamp
* taking into account a custom timezone and locale. If no
* Calendar object is specified, the driver uses the default
* timezone and locale.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the parameter value
* @param cal the Calendar object the driver will use
* to construct the timestamp
* @exception SQLException if a database access error occurs
*/
public void setTimestamp (int parameterIndex, java.sql.Timestamp x, java.util.Calendar cal)
throws java.sql.SQLException {
wrappedStatement.setTimestamp(parameterIndex, x, cal);
saveQueryParamValue(parameterIndex, x);
}


/**
* Sets the designated parameter to the given input stream, which will have
* the specified number of bytes.
* When a very large UNICODE value is input to a LONGVARCHAR
* parameter, it may be more practical to send it via a
* java.io.InputStream. JDBC will read the data from the stream
* as needed, until it reaches end-of-file. The JDBC driver will
* do any necessary conversion from UNICODE to the database char format.
* The byte format of the Unicode stream must be Java UTF-8, as
* defined in the Java Virtual Machine Specification.
*
*

Note: This stream object can either be a standard
* Java stream object or your own subclass that implements the
* standard interface.
*
* @param parameterIndex the first parameter is 1, the second is 2, ...
* @param x the java input stream which contains the
* UNICODE parameter value
* @param length the number of bytes in the stream
* @exception SQLException if a database access error occurs
* @deprecated
*/
public void setUnicodeStream (int parameterIndex, java.io.InputStream x, int length)
throws java.sql.SQLException {
wrappedStatement.setUnicodeStream(parameterIndex, x, length);
saveQueryParamValue(parameterIndex, x);
}


/**
* Returns the sql statement string (question marks replaced with set parameter values)
* that will be (or has been) executed by the {@link java.sql.PreparedStatement PreparedStatement} that this
* LoggableStatement is a wrapper for.
*


* @return java.lang.String the statemant represented by this LoggableStatement
*/
public String getQueryString () {
StringBuffer buf = new StringBuffer();
int qMarkCount = 0;
StringTokenizer tok = new StringTokenizer(sqlTemplate + " ", "?");

while (tok.hasMoreTokens()) {
String oneChunk = tok.nextToken();
buf.append(oneChunk);

Object value;

if (parameterValues.size() > (1 + qMarkCount)) {
value = parameterValues.get(1 + qMarkCount++);
}else {
if (tok.hasMoreTokens()) {
value = null;
}else {
value = "";
}
}

buf.append("" + value);
}

return buf.toString()
.trim();
}


/**
* Saves the parameter value obj for the specified position for use in logging output
*
* @param position position (starting at 1) of the parameter to save
* @param obj java.lang.Object the parameter value to save
*/
private void saveQueryParamValue (int position, Object obj) {
String strValue;

if (obj instanceof String || obj instanceof Date) {
// if we have a String or Date , include '' in the saved value
strValue = "'" + obj + "'";
}else {
if (obj == null) {
// convert null to the string null
strValue = "null";
}else {
// unknown object (includes all Numbers), just call toString
strValue = obj.toString();
}
}

// if we are setting a position larger than current size of parameterValues, first make it larger
while (position >= parameterValues.size()) {
parameterValues.add(null);
}

// save the parameter
parameterValues.set(position, strValue);
}


/**
*
*
* @return le parametre Metadata
*
* @throws SQLException erreur SQL
*/
public ParameterMetaData getParameterMetaData ()
throws SQLException {
return wrappedStatement.getParameterMetaData();
}


/**
*
*
* @param arg0 int
* @param arg1 URL
*
* @throws SQLException SQLException
*/
public void setURL (int arg0, URL arg1)
throws SQLException {
wrappedStatement.setURL(arg0, arg1);
}


/**
*
*
* @param arg0 String
* @param arg1 int
*
* @return boolean
*
* @throws SQLException SQLException
*/
public boolean execute (String arg0, int arg1)
throws SQLException {
return wrappedStatement.execute(arg0, arg1);
}


/**
*
*
* @param arg0 String
* @param arg1 int[]
*
* @return boolean
*
* @throws SQLException SQLException
*/
public boolean execute (String arg0, int[] arg1)
throws SQLException {
return wrappedStatement.execute(arg0, arg1);
}


/**
*
*
* @param arg0 String
* @param arg1 String[]
*
* @return boolean
*
* @throws SQLException SQLException
*/
public boolean execute (String arg0, String[] arg1)
throws SQLException {
return wrappedStatement.execute(arg0, arg1);
}


/**
*
*
* @param arg0 String
* @param arg1 int
*
* @return int
*
* @throws SQLException SQLException
*/
public int executeUpdate (String arg0, int arg1)
throws SQLException {
return wrappedStatement.executeUpdate(arg0, arg1);
}


/**
*
*
* @param arg0 String
* @param arg1 int[]
*
* @return int
*
* @throws SQLException SQLException
*/
public int executeUpdate (String arg0, int[] arg1)
throws SQLException {
return wrappedStatement.executeUpdate(arg0, arg1);
}


/**
*
*
* @param arg0 String
* @param arg1 String[]
*
* @return int
*
* @throws SQLException SQLException
*/
public int executeUpdate (String arg0, String[] arg1)
throws SQLException {
return wrappedStatement.executeUpdate(arg0, arg1);
}


/**
*
*
* @return ResultSet
*
* @throws SQLException SQLException
*/
public ResultSet getGeneratedKeys ()
throws SQLException {
return wrappedStatement.getGeneratedKeys();
}


/**
*
*
* @param arg0 int
*
* @return boolean
*
* @throws SQLException SQLException
*/
public boolean getMoreResults (int arg0)
throws SQLException {
return wrappedStatement.getMoreResults();
}


/**
*
*
* @return int
*
* @throws SQLException SQLException
*/
public int getResultSetHoldability ()
throws SQLException {
return wrappedStatement.getResultSetHoldability();
}
}



java : apache : commons cli

Voici, un petit extrait de code permettant de faire des batchs avec des arguments professionnel ... Pour cela, il faut la librairie apache commons-cli (command line arguments)

voila comment ajouter un argument d à la ligne de commande :

Option srcDirOpt = OptionBuilder.withArgName("sourceDirectory").hasArg().isRequired().withDescription( "specifie le repertoire source").create("d");


Il faut noter que l'option -d possède un argument obligatoire (hasArg().isRequired()), et on y ajoute une description ...

Ensuite, on crée une liste d'options ...
Options options = new Options();

// ajout des options

options.addOption(srcDirOpt);

Ensuite, on instancie un parseur (ici les arguments seront de type GNU
// creation du parseurs

CommandLineParser parseur = new GnuParser();



Ensuite, Le parseur parse la ligne de commande ...
CommandLine commandLine = parseur.parse(options, args);


Si la syntaxe est respectée, il est facile de récupérer les arguments de la ligne de commande ... en nommant les optiond -d
String srcDirValue = commandLine.getOptionValue("-d");


Ce qui donne pour mon programme ...
java MonAppi -d /users/prod3/sidef/src/

Voici, une option sympa pour afficher une ligne d'aide formaté à GNU (la classe HelpFormater)

private static void printUsages(Options options) {
HelpFormatter formatter = new HelpFormatter();
formatter.printHelp(CpCvs.class.getName(), options);
}


unix : shell lancer une commande longue ...

pour lancer ce genre de commande longue (comme un batch ou script SQL), il est nécessaire d'uiliser la commande nohup

cette commande vous permet d'ignorer les signaux d'arrêt (lorsque votre terminal ou putty se ferme durant la nuit car il a atteint le TIMEOUT ...).

De plus, un fichier nommé (par défaut nohup.out) est crée et vous permet de lire les sorties de votre commande ...


nohup monScriptSuperLong.sh

java : valider un XML par un shema

<?xml version="1.0" encoding="UTF-8"?>

<schema xmlns="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.example.org/SimpleSchema"

xmlns:tns="http://www.example.org/SimpleSchema" elementFormDefault="qualified">

<element name="Personne" type="tns:Identite"></element>

<complexType name="Identite">

<sequence>

<element name="nom" type="string"></element>

<element name="prenom" type="string"></element>

<element name="age" type="nonNegativeInteger"></element>

<element name="naissance" type="date"></element>

<element name="dureeSession" type="time"></element>

<element name="email" type="tns:emailType"></element>

</sequence>

</complexType>



<simpleType name="emailType">

<restriction base="string">

<minLength value="10"></minLength>

<maxLength value="20"></maxLength>

<pattern value="(\w)+(@)(\w.)+(fr|com)"></pattern>

</restriction>

</simpleType>

</schema>




et le code java qui va bien :

package com.enwoo;



import java.io.File;

import java.io.IOException;



import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.parsers.ParserConfigurationException;



import org.w3c.dom.Document;

import org.xml.sax.ErrorHandler;

import org.xml.sax.SAXException;

import org.xml.sax.SAXParseException;



public class ValidateurXML {



static final String JAXP_SCHEMA_LANGUAGE = "http://java.sun.com/xml/jaxp/properties/schemaLanguage";

static final String W3C_XML_SCHEMA = "http://www.w3.org/2001/XMLSchema";

static final String JAXP_SCHEMA_SOURCE = "http://java.sun.com/xml/jaxp/properties/schemaSource";

/**

* @param args

* @throws ParserConfigurationException

* @throws IOException

* @throws SAXException

*/

public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException

{

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

dbf.setIgnoringComments(true);

dbf.setNamespaceAware(true);

dbf.setValidating(true);

dbf.setAttribute(JAXP_SCHEMA_LANGUAGE, W3C_XML_SCHEMA);

File schema = new File("ressources/SimpleSchema.xsd");

ValidateurXML validateurXML= new ValidateurXML();



if(!schema.exists())

{

System.err.println("Schema introuvable");

}

else

{

dbf.setAttribute(JAXP_SCHEMA_SOURCE,schema);

DocumentBuilder db = dbf.newDocumentBuilder();

db.setErrorHandler(validateurXML.new MyErrorHandler());

Document doc = db.parse(new File("ressources/Personnes.xml"));

}

}



private class MyErrorHandler implements ErrorHandler

{

public void error(SAXParseException exception) throws SAXException {

exception.printStackTrace();



}



public void fatalError(SAXParseException exception) throws SAXException {

exception.printStackTrace();



}



public void warning(SAXParseException exception) throws SAXException {

exception.printStackTrace();

}

}



un très bonne exemple ...

java : créer un comparateur

/**

* comparateur permettant un tri par ordre decroissant sur la date DH_ENVOI_ALERTE

* @author enwoo

*

*/

private class TriObjetAComparerParDhEnvoiAlerteDecroissant implements Comparator<ObjetAComparer>

{

public int compare(ObjetAComparer o1, ObjetAComparer o2) {



if(o1 == null || o1.getAlm() == null || o1.getAlm().getDhEnvoiAlerte() == null || o2== null || o2.getAlm() == null || o2.getAlm().getDhEnvoiAlerte() == null)

{

throw new NullPointerException("L'objet ne peut etre null");

}

else

{

int cas = o1.getAlm().getDhEnvoiAlerte().compareTo(o2.getAlm().getDhEnvoiAlerte());



if(cas > 0)

{

cas = -1;

}

else if(cas < 0)

{

cas = 1;

}



return cas;

}

}

}

sourceForge EE : wiki

les astuces du metalangage de sourceForge pour obtenir un beau wiki (tout est expliqué sur le lien de SFEE "syntax reference" :

pour une belle ligne ...
----


Un joli titre en couleur ...
!!!%%(width:100% ; color:#1a957c ;)Mon accueil de wiki %%

une belle image ... attention pour cela, il faut créer une page et ajouter l'image avec le bon nom en attachement ... (PJ)
[GallerieImages/monImage.png]


Une joli puce avec un lien |BonnesPratiquesDeveloppementDEF vers artifact SourceForge
* [Bonnes pratiques concernant le développement |BonnesPratiquesDeveloppementDEF]

Un joli sommaire avec une liste de liens numérotés

%%(background-color:#f9f9f9;)
!!Sommaire
#[En résumé ]
#[Les niveaux de trace]
%%


Attention, ça se complique ... si ma page courante s'appelle pageCourante, je peux y faire des références par un lien ...
ici :
* on crée un titre nommé "Les paramètres de lancement"
* avec un lien vers le titre de cette page nommé "pageCourante" et le lien "#Les paramètres de lancement"

ce qui donne pour la syntaxe ...
[Les paramètres de lancement|pageCourante#Les paramètres de lancement]



%%(background-color:#f9f9f9;)
!!Sommaire
#[Les paramètres de lancement|pageCourante#Les paramètres de lancement]
%%

!!Les paramètres de lancement
Voic les fameux paramètres expliqués ... blabla ... blabla ...

selenium

un bon wiki ...
wiki selenium