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

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/**
 * Copyright (C) 2009 Authors
 * 
 * This file is part of Ebean.
 * 
 * Ebean is free software; you can redistribute it and/or modify it 
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *  
 * Ebean is distributed in the hope that it will be useful, but 
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with Ebean; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA  
 */
package com.avaje.ebeaninternal.server.expression;

import com.avaje.ebean.event.BeanQueryRequest;
import com.avaje.ebeaninternal.api.ManyWhereJoins;
import com.avaje.ebeaninternal.api.SpiExpression;
import com.avaje.ebeaninternal.api.SpiExpressionRequest;
import com.avaje.ebeaninternal.api.SpiLuceneExpr;
import com.avaje.ebeaninternal.server.deploy.BeanDescriptor;
import com.avaje.ebeaninternal.server.el.ElPropertyDeploy;
import com.avaje.ebeaninternal.server.query.LuceneResolvableRequest;

/**
 * Between expression where a value is between two properties.
 * 
 * @author rbygrave
 */
class BetweenPropertyExpression implements SpiExpression {

    private static final long serialVersionUID = 2078918165221454910L;

    private static final String BETWEEN = " between ";

    private final FilterExprPath pathPrefix;
    private final String lowProperty;
    private final String highProperty;
    private final Object value;

    BetweenPropertyExpression(FilterExprPath pathPrefix, String lowProperty, String highProperty, Object value) {
        this.pathPrefix = pathPrefix;
        this.lowProperty = lowProperty;
        this.highProperty = highProperty;
        this.value = value;
    }

    public boolean isLuceneResolvable(LuceneResolvableRequest req) {
        return false;
    }
    
    public SpiLuceneExpr createLuceneExpr(SpiExpressionRequest request) {
        return null;
    }

    protected String name(String propName) {
        if (pathPrefix == null){
            return propName;
        } else {
            String path = pathPrefix.getPath();
            if (path == null || path.length() == 0){
                return propName;
            } else {
                return path+"."+propName;
            }
        }
    }

    public void containsMany(BeanDescriptor desc, ManyWhereJoins manyWhereJoin) {

        
        ElPropertyDeploy elProp = desc.getElPropertyDeploy(name(lowProperty));
        if (elProp != null && elProp.containsMany()) {
            manyWhereJoin.add(elProp);
        }

        elProp = desc.getElPropertyDeploy(name(highProperty));
        if (elProp != null && elProp.containsMany()) {
            manyWhereJoin.add(elProp);
        }
    }

    public void addBindValues(SpiExpressionRequest request) {
        request.addBindValue(value);
    }

    public void addSql(SpiExpressionRequest request) {

        request.append(" ? ").append(BETWEEN)
            .append(name(lowProperty))
            .append(" and ").append(name(highProperty));
    }

    public int queryAutoFetchHash() {
        int hc = BetweenPropertyExpression.class.getName().hashCode();
        hc = hc * 31 + lowProperty.hashCode();
        hc = hc * 31 + highProperty.hashCode();
        return hc;
    }

    public int queryPlanHash(BeanQueryRequest request) {
        return queryAutoFetchHash();
    }

    public int queryBindHash() {
        return value.hashCode();
    }
}