/*
* Copyright 2011 JBoss Inc
*
* 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 org.drools.lang.api.impl;
import org.drools.lang.api.AccumulateDescrBuilder;
import org.drools.lang.api.CollectDescrBuilder;
import org.drools.lang.api.PatternDescrBuilder;
import org.drools.lang.api.SourceDescrBuilder;
import org.drools.lang.descr.EntryPointDescr;
import org.drools.lang.descr.FromDescr;
import org.drools.lang.descr.MVELExprDescr;
import org.drools.lang.descr.PatternDescr;
import org.drools.lang.descr.WindowReferenceDescr;
/**
* A descr builder implementation for pattern sources
*/
public class SourceDescrBuilderImpl<P extends PatternDescrBuilder<?>> extends BaseDescrBuilderImpl<P, PatternDescr>
implements
SourceDescrBuilder<P> {
protected SourceDescrBuilderImpl(P parent) {
super( parent, parent.getDescr() );
}
public P expression( String expression ) {
FromDescr from = new FromDescr();
from.setDataSource( new MVELExprDescr( expression ) );
descr.setSource( from );
return parent;
}
public P entryPoint( String entryPoint ) {
EntryPointDescr ep = new EntryPointDescr( entryPoint );
descr.setSource( ep );
return parent;
}
public CollectDescrBuilder<P> collect() {
CollectDescrBuilder<P> collect = new CollectDescrBuilderImpl<P>( parent );
descr.setSource( collect.getDescr() );
return collect;
}
public AccumulateDescrBuilder<P> accumulate() {
AccumulateDescrBuilder<P> accumulate = new AccumulateDescrBuilderImpl<P>( parent );
descr.setSource( accumulate.getDescr() );
return accumulate;
}
public P window( String window ) {
WindowReferenceDescr wd = new WindowReferenceDescr( window );
descr.setSource( wd );
return parent;
}
}