/*
* 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.
*
* Other licenses:
* -----------------------------------------------------------------------------
* Commercial licenses for this work are available. These replace the above
* ASL 2.0 and offer limited warranties, support, maintenance, and commercial
* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
*
*
*
*
*
*
*
*
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*
*
*/
package org.jooq.impl;
import static org.jooq.impl.DSL.one;
import org.jooq.Configuration;
import org.jooq.Field;
/**
* @author Lukas Eder
*/
final class Position extends AbstractFunction<Integer> {
private static final long serialVersionUID = 3544690069533526544L;
private final Field<String> search;
private final Field<String> in;
private final Field<? extends Number> startIndex;
Position(Field<String> search, Field<String> in) {
this(search, in, null);
}
Position(Field<String> search, Field<String> in, Field<? extends Number> startIndex) {
super("position", SQLDataType.INTEGER, search, in, startIndex);
this.search = search;
this.in = in;
this.startIndex = startIndex;
}
@Override
final Field<Integer> getFunction0(Configuration configuration) {
if (startIndex != null)
switch (configuration.family()) {
default:
return DSL.position(DSL.substring(in, startIndex), search).add(startIndex).sub(one());
}
else
switch (configuration.family()) {
case DERBY:
return DSL.field("{locate}({0}, {1})", SQLDataType.INTEGER, search, in);
case SQLITE:
return DSL.field("{instr}({0}, {1})", SQLDataType.INTEGER, in, search);
default:
return DSL.field("{position}({0} {in} {1})", SQLDataType.INTEGER, search, in);
}
}
}