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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;
/**
* This class represents "SET column = value" in an UPDATE statement.
*
* @param <T> the query type
* @param <A> the new value data type
*/
public class UpdateColumnSet<T, A> implements UpdateColumn {
private Query<T> query;
private A x;
private A y;
private boolean isParameter;
UpdateColumnSet(Query<T> query, A x) {
this.query = query;
this.x = x;
}
public Query<T> to(A y) {
query.addUpdateColumnDeclaration(this);
this.y = y;
return query;
}
public Query<T> toParameter() {
query.addUpdateColumnDeclaration(this);
isParameter = true;
return query;
}
public void appendSQL(SQLStatement stat) {
query.appendSQL(stat, null, x);
stat.appendSQL(" = ");
if (isParameter) {
query.appendSQL(stat, x, RuntimeParameter.PARAMETER);
} else {
query.appendSQL(stat, x, y);
}
}
}
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