/*
* *************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
* *************************************************************************************
*/
package com.espertech.esper.core.service;
import com.espertech.esper.epl.spec.OnTriggerType;
import com.espertech.esper.epl.spec.StatementSpecRaw;
/**
* Statement metadata.
*/
public class StatementMetadataFactoryDefault implements StatementMetadataFactory
{
public StatementMetadata create(StatementMetadataFactoryContext context) {
return new StatementMetadata(getStatementType(context.getStatementSpec(), context.isPattern()));
}
public static StatementType getStatementType(StatementSpecRaw statementSpec, boolean pattern) {
// determine statement type
StatementType statementType = null;
if (statementSpec.getCreateVariableDesc() != null) {
statementType = StatementType.CREATE_VARIABLE;
}
else if (statementSpec.getCreateWindowDesc() != null) {
statementType = StatementType.CREATE_WINDOW;
}
else if (statementSpec.getOnTriggerDesc() != null) {
if (statementSpec.getOnTriggerDesc().getOnTriggerType() == OnTriggerType.ON_DELETE) {
statementType = StatementType.ON_DELETE;
}
else if (statementSpec.getOnTriggerDesc().getOnTriggerType() == OnTriggerType.ON_UPDATE) {
statementType = StatementType.ON_UPDATE;
}
else if (statementSpec.getOnTriggerDesc().getOnTriggerType() == OnTriggerType.ON_SELECT) {
if (statementSpec.getInsertIntoDesc() != null) {
statementType = StatementType.ON_INSERT;
}
else {
statementType = StatementType.ON_SELECT;
}
}
else if (statementSpec.getOnTriggerDesc().getOnTriggerType() == OnTriggerType.ON_SET) {
statementType = StatementType.ON_SET;
}
else if (statementSpec.getOnTriggerDesc().getOnTriggerType() == OnTriggerType.ON_MERGE) {
statementType = StatementType.ON_MERGE;
}
else if (statementSpec.getOnTriggerDesc().getOnTriggerType() == OnTriggerType.ON_SPLITSTREAM) {
statementType = StatementType.ON_SPLITSTREAM;
}
}
else if (statementSpec.getInsertIntoDesc() != null) {
statementType = StatementType.INSERT_INTO;
}
else if (pattern) {
statementType = StatementType.PATTERN;
}
else if (statementSpec.getUpdateDesc() != null) {
statementType = StatementType.UPDATE;
}
else if (statementSpec.getCreateIndexDesc() != null) {
statementType = StatementType.CREATE_INDEX;
}
else if (statementSpec.getCreateContextDesc() != null) {
statementType = StatementType.CREATE_CONTEXT;
}
else if (statementSpec.getCreateSchemaDesc() != null) {
statementType = StatementType.CREATE_SCHEMA;
}
else if (statementSpec.getCreateDataFlowDesc() != null) {
statementType = StatementType.CREATE_GRAPH;
}
else if (statementSpec.getCreateExpressionDesc() != null) {
statementType = StatementType.CREATE_EXPRESSION;
}
if (statementType == null) {
statementType = StatementType.SELECT;
}
return statementType;
}
}