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/*
* Copyright 2004-2011 H2 Group.
* Copyright 2011 James Moger.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.iciql;
/**
* An expression to order by in a query.
*
* @param <T>
* the query data type
*/
class OrderExpression<T> {
private Query<T> query;
private Object expression;
private boolean desc;
private boolean nullsFirst;
private boolean nullsLast;
OrderExpression(Query<T> query, Object expression, boolean desc, boolean nullsFirst, boolean nullsLast) {
this.query = query;
this.expression = expression;
this.desc = desc;
this.nullsFirst = nullsFirst;
this.nullsLast = nullsLast;
}
void appendSQL(SQLStatement stat) {
query.appendSQL(stat, expression);
if (desc) {
stat.appendSQL(" DESC");
}
if (nullsLast) {
stat.appendSQL(" NULLS LAST");
}
if (nullsFirst) {
stat.appendSQL(" NULLS FIRST");
}
}
}
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