org.jooq.impl.SortFieldList Maven / Gradle / Ivy
/**
* Copyright (c) 2009-2016, Data Geekery GmbH (http://www.datageekery.com)
* All rights reserved.
*
* 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 java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.jooq.Field;
import org.jooq.SortField;
import org.jooq.SortOrder;
/**
* @author Lukas Eder
*/
final class SortFieldList extends QueryPartList> {
private static final long serialVersionUID = -1825164005148183725L;
SortFieldList() {
// Java 6's compiler seems to be unable to infer this type
this(Collections.>emptyList());
}
SortFieldList(List> wrappedList) {
super(wrappedList);
}
final void addAll(Field... fields) {
SortField[] result = new SortField[fields.length];
for (int i = 0; i < fields.length; i++) {
result[i] = fields[i].asc();
}
addAll(Arrays.asList(result));
}
/**
* Whether the {@link SortField}s in this list are uniformly sorted, e.g.
* all {@link SortOrder#ASC} or all {@link SortOrder#DESC}.
*/
final boolean uniform() {
for (SortField field : this)
if (field.getOrder() != get(0).getOrder())
return false;
return true;
}
/**
* Whether any of the {@link SortField}s in this list contains a
* NULLS FIRST
or NULLS LAST
clause.
*/
final boolean nulls() {
for (SortField field : this)
if (((SortFieldImpl) field).getNullsFirst() ||
((SortFieldImpl) field).getNullsLast())
return true;
return false;
}
final List> fields() {
List> result = new ArrayList>();
for (SortField field : this)
result.add(((SortFieldImpl) field).getField());
return result;
}
}