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/*
 * Copyright 2011 Red Hat, Inc. and/or its affiliates.
 *
 * 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.compiler.lang.api.impl;

import org.drools.compiler.lang.api.CEDescrBuilder;
import org.drools.compiler.lang.api.PackageDescrBuilder;
import org.drools.compiler.lang.descr.QueryDescr;
import org.drools.compiler.lang.api.AnnotationDescrBuilder;
import org.drools.compiler.lang.api.QueryDescrBuilder;
import org.drools.compiler.lang.descr.AndDescr;

/**
 * A descr builder for queries
 */
public class QueryDescrBuilderImpl extends BaseDescrBuilderImpl
    implements
    QueryDescrBuilder {

    protected QueryDescrBuilderImpl( PackageDescrBuilder parent ) {
        super( parent, new QueryDescr() );
    }


    public AnnotationDescrBuilder newAnnotation( String name ) {
        AnnotationDescrBuilder annotation = new AnnotationDescrBuilderImpl( this, name );
        descr.addAnnotation( annotation.getDescr() );
        return annotation;
    }

    public QueryDescrBuilder name( String name ) {
        descr.setName( name );
        return this;
    }

    public CEDescrBuilder lhs() {
        CEDescrBuilder ce = new CEDescrBuilderImpl( this, new AndDescr() );
        descr.setLhs( ce.getDescr() );
        return ce;
    }


    public QueryDescrBuilder parameter( String type,
                                        String variable ) {
        descr.addParameter( type,
                            variable );
        return this;
    }


}