| /* Copyright (c) 2001-2010, The HSQL Development Group |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * Neither the name of the HSQL Development Group nor the names of its |
| * contributors may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG, |
| * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| |
| package org.hsqldb; |
| |
| import org.hsqldb.error.Error; |
| import org.hsqldb.error.ErrorCode; |
| import org.hsqldb.lib.OrderedHashSet; |
| import org.hsqldb.store.ValuePool; |
| import org.hsqldb.result.Result; |
| |
| /** |
| * Implementation of SQL TRIGGER objects.<p> |
| * |
| * @author Fred Toussi (fredt@users dot sourceforge.net) |
| * @version 1.9.0 |
| * @since 1.9.0 |
| */ |
| public class TriggerDefSQL extends TriggerDef { |
| |
| OrderedHashSet references; |
| |
| public TriggerDefSQL(HsqlNameManager.HsqlName name, int when, |
| int operation, boolean forEachRow, Table table, |
| Table[] transitions, RangeVariable[] rangeVars, |
| Expression condition, String conditionSQL, |
| int[] updateColumns, Routine routine) { |
| |
| super(name, when, operation, forEachRow, table, transitions, |
| rangeVars, condition, conditionSQL, updateColumns); |
| |
| this.routine = routine; |
| this.references = routine.getReferences(); |
| } |
| |
| public OrderedHashSet getReferences() { |
| return routine.getReferences(); |
| } |
| |
| public OrderedHashSet getComponents() { |
| return null; |
| } |
| |
| public void compile(Session session, SchemaObject parentObject) {} |
| |
| public String getClassName() { |
| return null; |
| } |
| |
| public boolean hasOldTable() { |
| return transitions[OLD_TABLE] != null; |
| } |
| |
| public boolean hasNewTable() { |
| return transitions[NEW_TABLE] != null; |
| } |
| |
| synchronized void pushPair(Session session, Object[] oldData, |
| Object[] newData) { |
| |
| Result result = Result.updateZeroResult; |
| |
| if (session.sessionContext.depth > 128) { |
| throw Error.error(ErrorCode.GENERAL_ERROR); |
| } |
| |
| session.sessionContext.push(); |
| |
| if (transitions[OLD_ROW] != null) { |
| rangeVars[OLD_ROW].getIterator(session).setCurrent(oldData); |
| } |
| |
| if (transitions[NEW_ROW] != null) { |
| rangeVars[NEW_ROW].getIterator(session).setCurrent(newData); |
| } |
| |
| if (condition.testCondition(session)) { |
| session.sessionContext.routineVariables = |
| ValuePool.emptyObjectArray; |
| result = routine.statement.execute(session); |
| } |
| |
| session.sessionContext.pop(); |
| |
| if (result.isError()) { |
| throw result.getException(); |
| } |
| } |
| |
| public String getSQL() { |
| |
| StringBuffer sb = getSQLMain(); |
| |
| sb.append(routine.statement.getSQL()); |
| |
| return sb.toString(); |
| } |
| } |