com.hazelcast.org.apache.calcite.rel.type.RelCrossType Maven / Gradle / Ivy
/*
* 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 com.hazelcast.org.apache.calcite.rel.type;
import com.hazelcast.org.apache.calcite.linq4j.Ord;
import com.hazelcast.com.google.common.collect.ImmutableList;
import java.util.List;
/**
* Type of the cartesian product of two or more sets of records.
*
* Its fields are those of its constituent records, but unlike a
* {@link RelRecordType}, those fields' names are not necessarily distinct.
*/
public class RelCrossType extends RelDataTypeImpl {
//~ Instance fields --------------------------------------------------------
public final ImmutableList types;
//~ Constructors -----------------------------------------------------------
/**
* Creates a cartesian product type. This should only be called from a
* factory method.
*/
@SuppressWarnings("method.invocation.invalid")
public RelCrossType(
List types,
List fields) {
super(fields);
this.types = ImmutableList.copyOf(types);
assert types.size() >= 1;
for (RelDataType type : types) {
assert !(type instanceof RelCrossType);
}
computeDigest();
}
//~ Methods ----------------------------------------------------------------
@Override public boolean isStruct() {
return false;
}
@Override protected void generateTypeString(StringBuilder sb, boolean withDetail) {
sb.append("CrossType(");
for (Ord type : Ord.zip(types)) {
if (type.i > 0) {
sb.append(", ");
}
if (withDetail) {
sb.append(type.e.getFullTypeString());
} else {
sb.append(type.e.toString());
}
}
sb.append(")");
}
}