com.avaje.ebeaninternal.server.expression.InQueryExpression Maven / Gradle / Ivy

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package com.avaje.ebeaninternal.server.expression;

import java.util.List;

import com.avaje.ebean.event.BeanQueryRequest;
import com.avaje.ebeaninternal.api.SpiEbeanServer;
import com.avaje.ebeaninternal.api.SpiExpressionRequest;
import com.avaje.ebeaninternal.api.SpiLuceneExpr;
import com.avaje.ebeaninternal.api.SpiQuery;
import com.avaje.ebeaninternal.server.query.CQuery;
import com.avaje.ebeaninternal.server.query.LuceneResolvableRequest;

/**
 * In expression using a sub query.
 * 
 * @authors Mario and Rob
 */
class InQueryExpression extends AbstractExpression {

	private static final long serialVersionUID = 666990277309851644L;

	private final SpiQuery subQuery;

	private transient CQuery compiledSubQuery;

	public InQueryExpression(FilterExprPath pathPrefix, String propertyName, SpiQuery subQuery) {
		super(pathPrefix, propertyName);
		this.subQuery = subQuery;
	}

    @Override
    public boolean isLuceneResolvable(LuceneResolvableRequest req) {
        return false;
    }

    public SpiLuceneExpr createLuceneExpr(SpiExpressionRequest request) {
        return null;
    }

	public int queryAutoFetchHash() {
		int hc = InQueryExpression.class.getName().hashCode();
		hc = hc * 31 + propName.hashCode();
		hc = hc * 31 + subQuery.queryAutofetchHash();
		return hc;
	}

	public int queryPlanHash(BeanQueryRequest request) {

		// queryPlanHash executes prior to addSql() or addBindValues()
		// ... so compiledQuery will exist
		compiledSubQuery = compileSubQuery(request);

		int hc = InQueryExpression.class.getName().hashCode();
		hc = hc * 31 + propName.hashCode();
		hc = hc * 31 + subQuery.queryPlanHash(request);
		return hc;
	}

	/**
	 * Compile/build the sub query.
	 */
	private CQuery compileSubQuery(BeanQueryRequest queryRequest) {

		SpiEbeanServer ebeanServer = (SpiEbeanServer) queryRequest.getEbeanServer();
		return ebeanServer.compileQuery(subQuery, queryRequest.getTransaction());
	}

	public int queryBindHash() {
		return subQuery.queryBindHash();
	}

	public void addSql(SpiExpressionRequest request) {

		String subSelect = compiledSubQuery.getGeneratedSql();
		subSelect = subSelect.replace('\n', ' ');
		
		String propertyName = getPropertyName();
		request.append(" (");
		request.append(propertyName);
		request.append(") in (");
		request.append(subSelect);
		request.append(") ");
	}

	public void addBindValues(SpiExpressionRequest request) {

		List