org.jooq.impl.Repeat Maven / Gradle / Ivy
/*
* 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
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* 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.function;
import org.jooq.Configuration;
import org.jooq.Field;
/**
* @author Lukas Eder
*/
final class Repeat extends AbstractFunction {
/**
* Generated UID
*/
private static final long serialVersionUID = -7273879239726265322L;
private final Field string;
private final Field count;
Repeat(Field string, Field count) {
super("rpad", SQLDataType.VARCHAR, string, count);
this.string = string;
this.count = count;
}
@Override
final Field getFunction0(Configuration configuration) {
switch (configuration.family()) {
case FIREBIRD:
return DSL.rpad(string, DSL.length(string).mul(count), string);
// Emulation of REPEAT() for SQLite currently cannot be achieved
// using RPAD() above, as RPAD() expects characters, not strings
// Another option is documented here, though:
// http://stackoverflow.com/questions/11568496/how-to-simulate-repeat-in-sqlite
case SQLITE:
return DSL.field("replace(substr(quote(zeroblob(({0} + 1) / 2)), 3, {0}), '0', {1})", String.class, count, string);
default:
return function("repeat", SQLDataType.VARCHAR, string, count);
}
}
}