/**
* Copyright (C) 2009-2013 FoundationDB, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.foundationdb.sql.optimizer.plan;
/** LIMIT / OFFSET */
public class Limit extends BasePlanWithInput
{
private int offset, limit;
private boolean offsetIsParameter, limitIsParameter;
public Limit(PlanNode input,
int offset, boolean offsetIsParameter,
int limit, boolean limitIsParameter) {
super(input);
this.offset = offset;
this.offsetIsParameter = offsetIsParameter;
this.limit = limit;
this.limitIsParameter = limitIsParameter;
}
public Limit(PlanNode input, int limit) {
this(input, 0, false, limit, false);
}
public int getOffset() {
return offset;
}
public boolean isOffsetParameter() {
return offsetIsParameter;
}
public int getLimit() {
return limit;
}
public boolean isLimitParameter() {
return limitIsParameter;
}
@Override
public String summaryString(SummaryConfiguration configuration) {
StringBuilder str = new StringBuilder(super.summaryString(configuration));
str.append("(");
if (offset > 0) {
str.append("OFFSET ");
if (offsetIsParameter) str.append("$");
str.append(offset);
}
if (limit >= 0) {
if (offset > 0) str.append(" ");
str.append("LIMIT ");
if (limitIsParameter) str.append("$");
str.append(limit);
}
str.append(")");
return str.toString();
}
}