com.datastax.oss.driver.internal.querybuilder.relation.DefaultMultiColumnRelationBuilder Maven / Gradle / Ivy
/*
* Copyright DataStax, Inc.
*
* 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.datastax.oss.driver.internal.querybuilder.relation;
import com.datastax.oss.driver.api.core.CqlIdentifier;
import com.datastax.oss.driver.api.querybuilder.relation.MultiColumnRelationBuilder;
import com.datastax.oss.driver.api.querybuilder.relation.OngoingWhereClause;
import com.datastax.oss.driver.api.querybuilder.relation.Relation;
import com.datastax.oss.driver.api.querybuilder.term.Term;
import com.datastax.oss.driver.internal.querybuilder.lhs.TupleLeftOperand;
import com.datastax.oss.driver.shaded.guava.common.base.Preconditions;
import edu.umd.cs.findbugs.annotations.NonNull;
import edu.umd.cs.findbugs.annotations.Nullable;
import net.jcip.annotations.Immutable;
@Immutable
public class DefaultMultiColumnRelationBuilder implements MultiColumnRelationBuilder {
private final Iterable identifiers;
public DefaultMultiColumnRelationBuilder(@NonNull Iterable identifiers) {
Preconditions.checkNotNull(identifiers);
Preconditions.checkArgument(
identifiers.iterator().hasNext(), "Tuple must contain at least one column");
this.identifiers = identifiers;
}
@NonNull
@Override
public Relation build(@NonNull String operator, @Nullable Term rightOperand) {
return new DefaultRelation(new TupleLeftOperand(identifiers), operator, rightOperand);
}
@Immutable
public static class Fluent>
implements MultiColumnRelationBuilder {
private final OngoingWhereClause statement;
private final MultiColumnRelationBuilder delegate;
public Fluent(
@NonNull OngoingWhereClause statement,
@NonNull Iterable identifiers) {
this.statement = statement;
this.delegate = new DefaultMultiColumnRelationBuilder(identifiers);
}
@NonNull
@Override
public StatementT build(@NonNull String operator, @Nullable Term rightOperand) {
return statement.where(delegate.build(operator, rightOperand));
}
}
}