/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.query.sql.lang;
import org.teiid.core.util.EquivalenceUtil;
import org.teiid.core.util.HashCodeUtil;
import org.teiid.query.sql.LanguageObject;
import org.teiid.query.sql.LanguageVisitor;
import org.teiid.query.sql.symbol.Expression;
import org.teiid.query.sql.visitor.SQLStringVisitor;
public class Limit implements LanguageObject {
public static String NON_STRICT = "NON_STRICT"; //$NON-NLS-1$
private Expression offset;
private Expression rowLimit;
private boolean implicit;
private boolean strict = true;
public Limit(Expression offset, Expression rowLimit) {
this.offset = offset;
this.rowLimit = rowLimit;
}
private Limit() {
}
public void setStrict(boolean strict) {
this.strict = strict;
}
public boolean isStrict() {
return strict;
}
public boolean isImplicit() {
return implicit;
}
public void setImplicit(boolean implicit) {
this.implicit = implicit;
}
public Expression getOffset() {
return offset;
}
public void setOffset(Expression offset) {
this.offset = offset;
}
public Expression getRowLimit() {
return rowLimit;
}
public void setRowLimit(Expression rowLimit ) {
this.rowLimit = rowLimit;
}
public void acceptVisitor(LanguageVisitor visitor) {
visitor.visit(this);
}
public int hashCode() {
int h = HashCodeUtil.hashCode(0, offset);
return HashCodeUtil.hashCode(h, rowLimit);
}
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (!(o instanceof Limit)) {
return false;
}
Limit other = (Limit)o;
if (!EquivalenceUtil.areEqual(this.offset, other.offset)) {
return false;
}
return EquivalenceUtil.areEqual(this.rowLimit, other.rowLimit);
}
public Limit clone() {
Limit clone = new Limit();
clone.implicit = this.implicit;
clone.strict = this.strict;
if (this.rowLimit != null) {
clone.setRowLimit((Expression) this.rowLimit.clone());
}
if (this.offset != null) {
clone.setOffset((Expression) this.offset.clone());
}
return clone;
}
public String toString() {
return SQLStringVisitor.getSQLString(this);
}
}