| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to you 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 org.apache.calcite.rel; |
| |
| import org.apache.calcite.util.mapping.IntPair; |
| |
| import com.google.common.collect.ImmutableList; |
| |
| import java.util.List; |
| |
| /** RelOptReferentialConstraint base implementation. */ |
| public class RelReferentialConstraintImpl implements RelReferentialConstraint { |
| |
| private final List<String> sourceQualifiedName; |
| private final List<String> targetQualifiedName; |
| private final List<IntPair> columnPairs; |
| |
| private RelReferentialConstraintImpl(List<String> sourceQualifiedName, |
| List<String> targetQualifiedName, List<IntPair> columnPairs) { |
| this.sourceQualifiedName = ImmutableList.copyOf(sourceQualifiedName); |
| this.targetQualifiedName = ImmutableList.copyOf(targetQualifiedName); |
| this.columnPairs = ImmutableList.copyOf(columnPairs); |
| } |
| |
| @Override public List<String> getSourceQualifiedName() { |
| return sourceQualifiedName; |
| } |
| |
| @Override public List<String> getTargetQualifiedName() { |
| return targetQualifiedName; |
| } |
| |
| @Override public List<IntPair> getColumnPairs() { |
| return columnPairs; |
| } |
| |
| @Override public int getNumColumns() { |
| return columnPairs.size(); |
| } |
| |
| public static RelReferentialConstraintImpl of(List<String> sourceQualifiedName, |
| List<String> targetQualifiedName, List<IntPair> columnPairs) { |
| return new RelReferentialConstraintImpl( |
| sourceQualifiedName, targetQualifiedName, columnPairs); |
| } |
| |
| @Override public String toString() { |
| return "{ " + sourceQualifiedName + ", " + targetQualifiedName + ", " |
| + columnPairs + " }"; |
| } |
| |
| } |
| |
| // End RelReferentialConstraintImpl.java |