net.sf.jsqlparser.statement.select.SubSelect.java Source code

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Here is the source code for net.sf.jsqlparser.statement.select.SubSelect.java

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/* ================================================================
 * JSQLParser : java based sql parser 
 * ================================================================
 *
 * Project Info:  http://jsqlparser.sourceforge.net
 * Project Lead:  Leonardo Francalanci (leoonardoo@yahoo.it);
 *
 * (C) Copyright 2004, by Leonardo Francalanci
 *
 * This library 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.
 *
 * This library 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 this
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 */

package net.sf.jsqlparser.statement.select;

import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;

import net.sf.jsqlparser.expression.Expression;
import net.sf.jsqlparser.expression.ExpressionVisitor;
import net.sf.jsqlparser.expression.operators.relational.ItemsList;
import net.sf.jsqlparser.expression.operators.relational.ItemsListVisitor;

/**
 * A subselect followed by an optional alias.
 */
public class SubSelect implements FromItem, Expression, ItemsList {
    private SelectBody selectBody;
    private String alias;

    public void accept(FromItemVisitor fromItemVisitor) {
        fromItemVisitor.visit(this);
    }

    public SelectBody getSelectBody() {
        return selectBody;
    }

    public void setSelectBody(SelectBody body) {
        selectBody = body;
    }

    public void accept(ExpressionVisitor expressionVisitor) {
        expressionVisitor.visit(this);
    }

    public String getAlias() {
        return alias;
    }

    public void setAlias(String string) {
        alias = string;
    }

    public void accept(ItemsListVisitor itemsListVisitor) {
        itemsListVisitor.visit(this);
    }

    public String toString() {
        return "(" + selectBody + ")" + ((alias != null) ? " AS " + alias : "");
    }

    @Override
    public boolean equals(Object obj) {

        if (obj == null)
            return false;
        if (obj == this)
            return true;
        if (!(obj instanceof SubSelect))
            return false;

        SubSelect rhs = (SubSelect) obj;
        return new EqualsBuilder().
        // if deriving: appendSuper(super.equals(obj)).
                append(alias, rhs.alias).append(selectBody.toString(), rhs.selectBody.toString()).isEquals();
    }

    @Override

    public int hashCode() {
        return new HashCodeBuilder(23452345, 67856787).append(alias).append(selectBody.toString()).toHashCode();

    }
}