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The AceQL Java Client JDBC Driver allows to wrap the AceQL HTTP APIs and eliminates the tedious works of handling communications errors and parsing JSON results. Android and Java Desktop application developers can access remote SQL databases and/or SQL databases in the cloud by simply including standard JDBC calls in their code, just like they would for a local database.

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/*
 * This file is part of AceQL JDBC Driver.
 * AceQL JDBC Driver: Remote JDBC access over HTTP with AceQL HTTP.
 * Copyright (c) 2023,  KawanSoft SAS
 * (http://www.kawansoft.com). All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.aceql.jdbc.commons.main.abstracts;

import java.sql.BatchUpdateException;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.Statement;

/**
 * Statement Wrapper. 
* Implements all the Statement methods. Usage is exactly the same as a * Statement. * */ public class AbstractStatement implements Statement { /** The Statement */ private Statement statement = null; /** Flag that says the caller is ConnectionHttp */ private boolean isConnectionHttp = false; /** * The constant indicating that the current ResultSet object * should be closed when calling getMoreResults. * * @since 1.4 */ public int CLOSE_CURRENT_RESULT = 1; /** * The constant indicating that the current ResultSet object * should not be closed when calling getMoreResults. * * @since 1.4 */ public int KEEP_CURRENT_RESULT = 2; /** * The constant indicating that all ResultSet objects that have * previously been kept open should be closed when calling * getMoreResults. * * @since 1.4 */ public int CLOSE_ALL_RESULTS = 3; /** * The constant indicating that a batch statement executed successfully but * that no count of the number of rows it affected is available. * * @since 1.4 */ public int SUCCESS_NO_INFO = -2; /** * The constant indicating that an error occured while executing a batch * statement. * * @since 1.4 */ public int EXECUTE_FAILED = -3; /** * The constant indicating that generated keys should be made available for * retrieval. * * @since 1.4 */ public int RETURN_GENERATED_KEYS = 1; /** * The constant indicating that generated keys should not be made available * for retrieval. * * @since 1.4 */ public int NO_GENERATED_KEYS = 2; /** * Set to true if the user has closed the connection by a explicit call to * close() */ private boolean isClosed = false; /** * Void Constructor * * Needed for HTTP usage because there is no real JDBC Connection */ public AbstractStatement() { isConnectionHttp = true; } /** * Constructor * * @param statement * actual statement in use to wrap */ public AbstractStatement(Statement statement) throws SQLException { this.statement = statement; } /** * Will throw a SQL Exception if calling method is not authorized **/ private void verifyCallAuthorization(String methodName) throws SQLException { if (isClosed) { throw new SQLException("Statement is closed."); } if (isConnectionHttp) { throw new SQLException( AbstractConnection.FEATURE_NOT_SUPPORTED_IN_THIS_VERSION + methodName); } } /** * Executes the given SQL statement, which returns a single * ResultSet object. * * @param sql * an SQL statement to be sent to the database, typically a * static SQL SELECT statement * @return a ResultSet object that contains the data produced * by the given query; never null * @exception SQLException * if a database access error occurs or the given SQL * statement produces anything other than a single * ResultSet object */ @Override public ResultSet executeQuery(String sql) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.executeQuery(sql); } /** * Executes the given SQL statement, which may be an INSERT, * UPDATE, or DELETE statement or an SQL statement * that returns nothing, such as an SQL DDL statement. * * @param sql * an SQL INSERT, UPDATE or * DELETE statement or an SQL statement that returns * nothing * @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 or the given SQL * statement produces a ResultSet object */ @Override public int executeUpdate(String sql) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.executeUpdate(sql); } /** * 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. *

* Calling the method close on a Statement object * that is already closed has no effect. *

* Note: A Statement object is automatically closed when * it is garbage collected. When a Statement object is closed, * its current ResultSet object, if one exists, is also closed. * * @exception SQLException * if a database access error occurs */ @Override public void close() throws SQLException { isClosed = true; } // ---------------------------------------------------------------------- /** * Retrieves the maximum number of bytes that can be returned for character * and binary column values in a ResultSet object produced by * this Statement object. This 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 column size limit for columns storing character and * binary values; zero means there is no limit * @exception SQLException * if a database access error occurs * @see #setMaxFieldSize */ @Override public int getMaxFieldSize() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getMaxFieldSize(); } /** * Sets the limit for the maximum number of bytes in a * ResultSet column storing character or binary values to the * given number of bytes. 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 column size limit in bytes; zero means there is no * limit * @exception SQLException * if a database access error occurs or the condition max >= * 0 is not satisfied * @see #getMaxFieldSize */ @Override public void setMaxFieldSize(int max) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); this.statement.setMaxFieldSize(max); } /** * Retrieves the maximum number of rows that a ResultSet object * produced by this Statement object can contain. If this limit * is exceeded, the excess rows are silently dropped. * * @return the current maximum number of rows for a ResultSet * object produced by this Statement object; zero means * there is no limit * @exception SQLException * if a database access error occurs * @see #setMaxRows */ @Override public int getMaxRows() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getMaxRows(); } /** * Sets the limit for the maximum number of rows that any * ResultSet object 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 there is no limit * @exception SQLException * if a database access error occurs or the condition max >= * 0 is not satisfied * @see #getMaxRows */ @Override public void setMaxRows(int max) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); this.statement.setMaxRows(max); } /** * Sets escape processing on or off. If escape scanning is on (the default), * the driver will do escape substitution before sending the SQL statement * to the database. * * Note: Since prepared statements have usually been parsed prior to making * this call, disabling escape processing for * PreparedStatements objects will have no effect. * * @param enable * true to enable escape processing; * false to disable it * @exception SQLException * if a database access error occurs */ @Override public void setEscapeProcessing(boolean enable) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); this.statement.setEscapeProcessing(enable); } /** * Retrieves the number of seconds the driver will wait for a * Statement object to execute. If the limit is exceeded, a * SQLException is thrown. * * @return the current query timeout limit in seconds; zero means there is * no limit * @exception SQLException * if a database access error occurs * @see #setQueryTimeout */ @Override public int getQueryTimeout() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getQueryTimeout(); } /** * Sets the number of seconds the driver will wait for a * Statement object to execute to the given number of seconds. * If the limit is exceeded, an SQLException is thrown. * * @param seconds * the new query timeout limit in seconds; zero means there is no * limit * @exception SQLException * if a database access error occurs or the condition seconds * >= 0 is not satisfied * @see #getQueryTimeout */ @Override public void setQueryTimeout(int seconds) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); this.statement.setQueryTimeout(seconds); } /** * 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 */ @Override public void cancel() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); this.statement.cancel(); } /** * Retrieves the first warning reported by calls on this * Statement object. Subsequent Statement object * warnings will be chained to this SQLWarning object. * *

* The warning chain is automatically cleared each time a statement is * (re)executed. This method may not be called on a closed * Statement object; doing so will cause an * SQLException to be thrown. * *

* Note: If you are processing a ResultSet object, any * warnings associated with reads on that ResultSet object will * be chained on it rather than on the Statement object that * produced it. * * @return the first SQLWarning object or null if * there are no warnings * @exception SQLException * if a database access error occurs or this method is called * on a closed statement */ @Override public SQLWarning getWarnings() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getWarnings(); } /** * 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 object. * * @exception SQLException * if a database access error occurs */ @Override public void clearWarnings() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); this.statement.clearWarnings(); } /** * Sets the SQL cursor name to the given String, which will be * used by subsequent Statement object execute * methods. This name can then be used in SQL positioned update or delete * statements to identify the current row in the ResultSet * object generated by this statement. If the database does not 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 have the form * SELECT FOR UPDATE. If FOR UPDATE is not * present, positioned updates may fail. * *

* Note: By definition, the execution of positioned updates and * deletes must be done by a different Statement object than * the one that generated the ResultSet object 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 */ @Override public void setCursorName(String name) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); this.statement.setCursorName(name); } // ----------------------- Multiple Results -------------------------- /** * Executes the given SQL statement, which may return multiple results. In * 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 execute method executes an SQL statement and indicates * the form of the first result. You must then use the methods * 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 first result is a ResultSet * object; false if it is an update count or there are * no results * @exception SQLException * if a database access error occurs * @see #getResultSet * @see #getUpdateCount * @see #getMoreResults */ @Override public boolean execute(String sql) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.execute(sql); } /** * Retrieves the current result as a ResultSet object. This * method should be called only once per result. * * @return the current result as a ResultSet object or * null if the result is an update count or there are * no more results * @exception SQLException * if a database access error occurs * @see #execute */ @Override public ResultSet getResultSet() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getResultSet(); } /** * Retrieves the current result as an update count; if the result is a * ResultSet object 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 the current result * is a ResultSet object or there are no more results * @exception SQLException * if a database access error occurs * @see #execute */ @Override public int getUpdateCount() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getUpdateCount(); } /** * Moves to this Statement object's next result, returns * true if it is a ResultSet object, and * implicitly closes any current ResultSet object(s) obtained * with the method getResultSet. * *

* There are no more results when the following is true: * *

     *      (!getMoreResults() && (getUpdateCount() == -1)
     * 
* * @return true if the next result is a ResultSet * object; false if it is an update count or there are * no more results * @exception SQLException * if a database access error occurs * @see #execute */ @Override public boolean getMoreResults() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getMoreResults(); } // --------------------------JDBC 2.0----------------------------- /** * Gives the driver a hint as to the direction in which rows will be * processed in ResultSet objects 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 * @since 1.2 * @see #getFetchDirection */ @Override public void setFetchDirection(int direction) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); this.statement.setFetchDirection(direction); } /** * 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 * @since 1.2 * @see #setFetchDirection */ @Override public int getFetchDirection() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getFetchDirection(); } /** * 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. * @since 1.2 * @see #getFetchSize */ @Override public void setFetchSize(int rows) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); this.statement.setFetchSize(rows); } /** * Retrieves the number of result set rows that is the default fetch size * for ResultSet objects 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 * @since 1.2 * @see #setFetchSize */ @Override public int getFetchSize() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getFetchSize(); } /** * Retrieves the result set concurrency for ResultSet objects * generated by this Statement object. * * @return either ResultSet.CONCUR_READ_ONLY or * ResultSet.CONCUR_UPDATABLE * @exception SQLException * if a database access error occurs * @since 1.2 */ @Override public int getResultSetConcurrency() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getResultSetConcurrency(); } /** * Retrieves the result set type for ResultSet objects * generated by this Statement object. * * @return one of ResultSet.TYPE_FORWARD_ONLY, * ResultSet.TYPE_SCROLL_INSENSITIVE, or * ResultSet.TYPE_SCROLL_SENSITIVE * @exception SQLException * if a database access error occurs * @since 1.2 */ @Override public int getResultSetType() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getResultSetType(); } /** * Adds the given SQL command to the current list of commmands for this * Statement object. The commands in this list can be executed * as a batch by calling the method executeBatch. *

* NOTE: 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 updates * @see #executeBatch * @since 1.2 */ @Override public void addBatch(String sql) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); this.statement.addBatch(sql); } /** * Empties this Statement object's current list of SQL * commands. *

* NOTE: This method is optional. * * @exception SQLException * if a database access error occurs or the driver does not * support batch updates * @see #addBatch * @since 1.2 */ @Override public void clearBatch() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); this.statement.clearBatch(); } /** * Submits a batch of commands to the database for execution and if all * commands execute successfully, returns an array of update counts. The * int elements of the array that is returned are ordered to * correspond to the commands in the batch, which are ordered according to * the order in which they were added to the batch. The elements in the * array returned by the method executeBatch may be one of the * following: *

    *
  1. A number greater than or equal to zero -- indicates that the command * was processed successfully and is an update count giving the number of * rows in the database that were affected by the command's execution *
  2. A value of SUCCESS_NO_INFO -- indicates that the command * was processed successfully but that the number of rows affected is * unknown *

    * If one of the commands in a batch update fails to execute properly, this * method throws a BatchUpdateException, and a JDBC driver may * or may not continue to process the remaining commands in the batch. * However, the driver's behavior must be consistent with a particular DBMS, * either always continuing to process commands or never continuing to * process commands. If the driver continues processing after a failure, the * array returned by the method * BatchUpdateException.getUpdateCounts will contain as many * elements as there are commands in the batch, and at least one of the * elements will be the following: *

    *

  3. A value of EXECUTE_FAILED -- indicates that the command * failed to execute successfully and occurs only if a driver continues to * process commands after a command fails *
*

* A driver is not required to implement this method. The possible * implementations and return values have been modified in the Java 2 SDK, * Standard Edition, version 1.3 to accommodate the option of continuing to * proccess commands in a batch update after a * BatchUpdateException obejct has been thrown. * * @return an array of update counts containing one element for each command * in the batch. The elements of the array are ordered according to * the order in which commands were added to the batch. * @exception SQLException * if a database access error occurs or the driver does not * support batch statements. Throws * {@link BatchUpdateException} (a subclass of * SQLException) if one of the commands sent to * the database fails to execute properly or attempts to * return a result set. * @since 1.3 */ @Override public int[] executeBatch() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.executeBatch(); } /** * Retrieves the Connection object that produced this * Statement object. * * @return the connection that produced this statement * @exception SQLException * if a database access error occurs * @since 1.2 */ @Override public Connection getConnection() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getConnection(); } // --------------------------JDBC 3.0----------------------------- /** * Moves to this Statement object's next result, deals with any * current ResultSet object(s) according to the instructions * specified by the given flag, and returns true if the next * result is a ResultSet object. * *

* There are no more results when the following is true: * *

     *      (!getMoreResults() && (getUpdateCount() == -1)
     * 
* * @param current * one of the following Statement constants * indicating what should happen to current * ResultSet objects obtained using the method * getResultSetCLOSE_CURRENT_RESULT, * KEEP_CURRENT_RESULT, or * CLOSE_ALL_RESULTS * @return true if the next result is a ResultSet * object; false if it is an update count or there are * no more results * @exception SQLException * if a database access error occurs * @since 1.4 * @see #execute */ @Override public boolean getMoreResults(int current) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getMoreResults(current); } /** * Retrieves any auto-generated keys created as a result of executing this * Statement object. If this Statement object did * not generate any keys, an empty ResultSet object is * returned. * * @return a ResultSet object containing the auto-generated * key(s) generated by the execution of this Statement * object * @exception SQLException * if a database access error occurs * @since 1.4 */ @Override public ResultSet getGeneratedKeys() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getGeneratedKeys(); } /** * Executes the given SQL statement and signals the driver with the given * flag about whether the auto-generated keys produced by this * Statement object should be made available for retrieval. * * @param sql * must be an SQL INSERT, UPDATE or * DELETE statement or an SQL statement that returns * nothing * @param autoGeneratedKeys * a flag indicating whether auto-generated keys should be made * available for retrieval; one of the following constants: * Statement.RETURN_GENERATED_KEYS * Statement.NO_GENERATED_KEYS * @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, the given SQL statement * returns a ResultSet object, or the given * constant is not one of those allowed * @since 1.4 */ @Override public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.executeUpdate(sql, autoGeneratedKeys); } /** * Executes the given SQL statement and signals the driver that the * auto-generated keys indicated in the given array should be made available * for retrieval. The driver will ignore the array if the SQL statement is * not an INSERT statement. * * @param sql * an SQL INSERT, UPDATE or * DELETE statement or an SQL statement that returns * nothing, such as an SQL DDL statement * @param columnIndexes * an array of column indexes indicating the columns that should * be returned from the inserted row * @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 or the SQL statement * returns a ResultSet object * @since 1.4 */ @Override public int executeUpdate(String sql, int[] columnIndexes) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.executeUpdate(sql, columnIndexes); } /** * Executes the given SQL statement and signals the driver that the * auto-generated keys indicated in the given array should be made available * for retrieval. The driver will ignore the array if the SQL statement is * not an INSERT statement. * * @param sql * an SQL INSERT, UPDATE or * DELETE statement or an SQL statement that returns * nothing * @param columnNames * an array of the names of the columns that should be returned * from the inserted row * @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 * * @since 1.4 */ @Override public int executeUpdate(String sql, String[] columnNames) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.executeUpdate(sql, columnNames); } /** * Executes the given SQL statement, which may return multiple results, and * signals the driver that any auto-generated keys should be made available * for retrieval. The driver will ignore this signal if the SQL statement is * not an INSERT statement. *

* In 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 execute method executes an SQL statement and indicates * the form of the first result. You must then use the methods * getResultSet or getUpdateCount to retrieve the * result, and getMoreResults to move to any subsequent * result(s). * * @param sql * any SQL statement * @param autoGeneratedKeys * a constant indicating whether auto-generated keys should be * made available for retrieval using the method * getGeneratedKeys; one of the following constants: * Statement.RETURN_GENERATED_KEYS or * Statement.NO_GENERATED_KEYS * @return true if the first result is a ResultSet * object; false if it is an update count or there are * no results * @exception SQLException * if a database access error occurs * @see #getResultSet * @see #getUpdateCount * @see #getMoreResults * @see #getGeneratedKeys * * @since 1.4 */ @Override public boolean execute(String sql, int autoGeneratedKeys) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.execute(sql, autoGeneratedKeys); } /** * Executes the given SQL statement, which may return multiple results, and * signals the driver that the auto-generated keys indicated in the given * array should be made available for retrieval. This array contains the * indexes of the columns in the target table that contain the * auto-generated keys that should be made available. The driver will ignore * the array if the given SQL statement is not an INSERT * statement. *

* 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 execute method executes an SQL statement and indicates * the form of the first result. You must then use the methods * getResultSet or getUpdateCount to retrieve the * result, and getMoreResults to move to any subsequent * result(s). * * @param sql * any SQL statement * @param columnIndexes * an array of the indexes of the columns in the inserted row * that should be made available for retrieval by a call to the * method getGeneratedKeys * @return true if the first result is a ResultSet * object; false if it is an update count or there are * no results * @exception SQLException * if a database access error occurs * @see #getResultSet * @see #getUpdateCount * @see #getMoreResults * * @since 1.4 */ @Override public boolean execute(String sql, int[] columnIndexes) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.execute(sql, columnIndexes); } /** * Executes the given SQL statement, which may return multiple results, and * signals the driver that the auto-generated keys indicated in the given * array should be made available for retrieval. This array contains the * names of the columns in the target table that contain the auto-generated * keys that should be made available. The driver will ignore the array if * the given SQL statement is not an INSERT statement. *

* In 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 execute method executes an SQL statement and indicates * the form of the first result. You must then use the methods * getResultSet or getUpdateCount to retrieve the * result, and getMoreResults to move to any subsequent * result(s). * * @param sql * any SQL statement * @param columnNames * an array of the names of the columns in the inserted row that * should be made available for retrieval by a call to the method * getGeneratedKeys * @return true if the next result is a ResultSet * object; 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 * @see #getGeneratedKeys * * @since 1.4 */ @Override public boolean execute(String sql, String[] columnNames) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.execute(sql, columnNames); } /** * Retrieves the result set holdability for ResultSet objects * generated by this Statement object. * * @return either ResultSet.HOLD_CURSORS_OVER_COMMIT or * ResultSet.CLOSE_CURSORS_AT_COMMIT * @exception SQLException * if a database access error occurs * * @since 1.4 */ @Override public int getResultSetHoldability() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return this.statement.getResultSetHoldability(); } /** * @return * @throws SQLException * @see java.sql.Statement#isClosed() */ @Override public boolean isClosed() throws SQLException { return isClosed; } /** * @return * @throws SQLException * @see java.sql.Statement#isPoolable() */ @Override public boolean isPoolable() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return statement.isPoolable(); } /** * @param arg0 * @return * @throws SQLException * @see java.sql.Wrapper#isWrapperFor(java.lang.Class) */ @Override public boolean isWrapperFor(Class arg0) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return statement.isWrapperFor(arg0); } /** * @param arg0 * @throws SQLException * @see java.sql.Statement#setPoolable(boolean) */ @Override public void setPoolable(boolean arg0) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); statement.setPoolable(arg0); } /** * @param * @param arg0 * @return * @throws SQLException * @see java.sql.Wrapper#unwrap(java.lang.Class) */ @Override public T unwrap(Class arg0) throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return statement.unwrap(arg0); } /////////////////////////////////////////////////////////// // JAVA 7 METHOD EMULATION // /////////////////////////////////////////////////////////// // @Override do not override for Java 6 compatibility @Override public void closeOnCompletion() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); } // @Override do not override for Java 6 compatibility @Override public boolean isCloseOnCompletion() throws SQLException { String methodName = new Object() { }.getClass().getEnclosingMethod().getName(); verifyCallAuthorization(methodName); return false; } }





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