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    • com.blazebit.persistence.impl.CriteriaBuilderImpl Maven / Gradle / Ivy

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    /*
 * Copyright 2014 Blazebit.
 *
 * 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 com.blazebit.persistence.impl;

import com.blazebit.persistence.CriteriaBuilder;
import com.blazebit.persistence.LeafOngoingSetOperationCriteriaBuilder;
import com.blazebit.persistence.ObjectBuilder;
import com.blazebit.persistence.SelectObjectBuilder;
import com.blazebit.persistence.StartOngoingSetOperationCriteriaBuilder;
import com.blazebit.persistence.spi.SetOperationType;

/**
 *
 * @param  The query result type
 * @author Christian Beikov
 * @author Moritz Becker
 * @since 1.0
 */
public class CriteriaBuilderImpl extends AbstractFullQueryBuilder, LeafOngoingSetOperationCriteriaBuilder, StartOngoingSetOperationCriteriaBuilder>, BaseFinalSetOperationCriteriaBuilderImpl> implements CriteriaBuilder {
	
    public CriteriaBuilderImpl(MainQuery mainQuery, boolean isMainQuery, Class clazz, String alias) {
        super(mainQuery, isMainQuery, clazz, alias, null);
    }

    @Override
    @SuppressWarnings("unchecked")
    public  SelectObjectBuilder> selectNew(Class clazz) {
        return (SelectObjectBuilder>) super.selectNew(clazz);
    }

    @Override
    @SuppressWarnings("unchecked")
    public  CriteriaBuilder selectNew(ObjectBuilder builder) {
        return (CriteriaBuilder) super.selectNew(builder);
    }
    
    @Override
    protected BaseFinalSetOperationCriteriaBuilderImpl createFinalSetOperationBuilder(SetOperationType operator, boolean nested) {
        boolean wasMainQuery = isMainQuery;
        this.isMainQuery = false;
        BuilderListener newListener = finalSetOperationBuilder == null ? null : finalSetOperationBuilder.getSubListener();
        
        if (nested) {
            return new OngoingFinalSetOperationCriteriaBuilderImpl(mainQuery, wasMainQuery, resultType, operator, nested, newListener);
        } else {
            return new FinalSetOperationCriteriaBuilderImpl(mainQuery, wasMainQuery, resultType, operator, nested, newListener);
        }
    }

    @Override
    protected LeafOngoingSetOperationCriteriaBuilder createSetOperand(BaseFinalSetOperationCriteriaBuilderImpl finalSetOperationBuilder) {
        return createLeaf(finalSetOperationBuilder);
    }

    @Override
    protected StartOngoingSetOperationCriteriaBuilder> createSubquerySetOperand(BaseFinalSetOperationCriteriaBuilderImpl finalSetOperationBuilder, BaseFinalSetOperationCriteriaBuilderImpl resultFinalSetOperationBuilder) {
        LeafOngoingSetOperationCriteriaBuilder leafCb = createLeaf(resultFinalSetOperationBuilder);
        return createOngoing(finalSetOperationBuilder, leafCb);
    }

    @SuppressWarnings("unchecked")
    private LeafOngoingSetOperationCriteriaBuilderImpl createLeaf(BaseFinalSetOperationCriteriaBuilderImpl finalSetOperationBuilder) {
        BuilderListener newListener = finalSetOperationBuilder.getSubListener();
        LeafOngoingSetOperationCriteriaBuilderImpl next = new LeafOngoingSetOperationCriteriaBuilderImpl(mainQuery, false, resultType, newListener, (FinalSetOperationCriteriaBuilderImpl) finalSetOperationBuilder);
        newListener.onBuilderStarted(next);
        return next;
    }

    @SuppressWarnings("unchecked")
    private  OngoingSetOperationCriteriaBuilderImpl createOngoing(BaseFinalSetOperationCriteriaBuilderImpl finalSetOperationBuilder, Y endSetResult) {
        // TODO: This is such an ugly hack, but I don't know how else to fix this generics issue for now
        finalSetOperationBuilder.setEndSetResult((T) endSetResult);
        
        BuilderListener newListener = finalSetOperationBuilder.getSubListener();
        OngoingSetOperationCriteriaBuilderImpl next = new OngoingSetOperationCriteriaBuilderImpl(mainQuery, false, resultType, newListener, (OngoingFinalSetOperationCriteriaBuilderImpl) finalSetOperationBuilder, endSetResult);
        newListener.onBuilderStarted(next);
        return next;
    }

}
    
    
    
    

    




    
    
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