/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.core.db.ant.dbupgrade;
import java.sql.Connection;
import java.util.ArrayList;
import java.util.List;
import mazz.i18n.Msg;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.rhq.core.db.DatabaseType;
import org.rhq.core.db.ant.DbAntI18NFactory;
import org.rhq.core.db.ant.DbAntI18NResourceKeys;
/**
* Task that allows direct SQL to be executed. The SQL can be targeted to all databased or a specific one. Usage of this
* task is easiest to describe via an example:
*
* <pre>
* <statement desc="Direct SQL only to execute if the database is Postgres (any version)"
* targetDBVendor="postgresql">
* INSERT INTO foo VALUES(true)
* </statement>
* <statement desc="Direct SQL only to execute if the database is Oracle10"
* targetDBVendor="oracle"
* targetDBVersion="10">
* INSERT INTO foo VALUES(1)
* </statement>
* </pre>
*
* If you specify a target DB version, you must specify a target DB vendor.
*/
public class SST_DirectSQL extends SchemaSpecTask {
private static final Msg MSG = DbAntI18NFactory.getMsg();
private List<Statement> statements;
/**
* Executes each statement defined in this direct-sql task.
*
* @see org.apache.tools.ant.Task#execute()
*/
public void execute() throws BuildException {
if (!isDBTargeted()) {
return;
}
validateAttributes();
Connection conn = getConnection();
DatabaseType db_type = getDatabaseType();
if (statements != null) {
for (Statement statement : statements) {
statement.init(conn, db_type);
statement.execute();
}
}
return;
}
/**
* Creates a new statement child task.
*
* @return new statement task
*/
public Statement createStatement() {
Statement statement = new Statement();
if (statements == null) {
statements = new ArrayList<Statement>();
}
statements.add(statement);
return statement;
}
private void validateAttributes() throws BuildException {
if (statements == null) {
throw new BuildException(MSG.getMsg(DbAntI18NResourceKeys.SCHEMA_SPEC_TASK_MISSING_CHILD_ELEMENT,
"DirectSQL", "statement"));
}
}
/**
* An individual statement task that is executed as part of the direct-sql schema spec task. One or more of these
* can be specified in the direct-sql task.
*/
public class Statement extends Task {
private Connection databaseConnection = null;
private DatabaseType databaseType = null;
private String sqlStatment = null;
private String sqlDescription = null;
private String targetDBVendor = null;
private String targetDBVersion = null;
/**
* Initializes this statement task with a database connection and database type.
*
* @param conn
* @param db_type
*/
public void init(Connection conn, DatabaseType db_type) {
this.databaseConnection = conn;
this.databaseType = db_type;
}
/**
* A simple description that is logged when executing this statement.
*
* @param s describes what the SQL is attempting to do
*/
public void setDesc(String s) {
sqlDescription = s;
}
/**
* Sets the vendor name of the target DB where this SQL should run. Any other DB should not have this SQL
* executed on it.
*
* @param vendor database vendor
*/
public void setTargetDBVendor(String vendor) {
targetDBVendor = vendor;
}
/**
* Sets the version string of the target DB where this SQL should run. Any other DB version should not have this
* SQL executed on it.
*
* @param version database version
*/
public void setTargetDBVersion(String version) {
targetDBVersion = version;
}
/**
* Defines the actual SQL to be executed
*
* @param sql SQL string to execute
*/
public void addText(String sql) {
sqlStatment = sql;
}
/**
* @see org.apache.tools.ant.Task#execute()
*/
public void execute() throws BuildException {
if (sqlStatment == null) {
return;
}
if ((targetDBVersion != null) && (targetDBVendor == null)) {
throw new BuildException(MSG.getMsg(
DbAntI18NResourceKeys.SCHEMA_SPEC_TASK_TARGET_VERSION_WITHOUT_VENDOR, getTaskName(),
targetDBVersion));
}
if (targetDBVendor != null) {
if (!targetDBVendor.equalsIgnoreCase(databaseType.getVendor())) {
log(MSG.getMsg(DbAntI18NResourceKeys.SCHEMA_SPEC_TASK_VENDOR_MISMATCH, targetDBVendor, databaseType
.getVendor()));
return;
}
if ((targetDBVersion != null) && !targetDBVersion.equalsIgnoreCase(databaseType.getVersion())) {
log(MSG.getMsg(DbAntI18NResourceKeys.SCHEMA_SPEC_TASK_VERSION_MISMATCH, targetDBVendor,
targetDBVersion, databaseType.getVersion()));
return;
}
}
try {
log(MSG.getMsg(DbAntI18NResourceKeys.DIRECTSQL_EXECUTING, sqlDescription, sqlStatment));
databaseType.executeSql(databaseConnection, sqlStatment);
} catch (Exception e) {
throw new BuildException(MSG.getMsg(DbAntI18NResourceKeys.SCHEMA_SPEC_TASK_FAILURE, "DirectSQL", e), e);
}
return;
}
}
}