org.apache.hadoop.hive.ql.metadata.Dimension Maven / Gradle / Ivy
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* 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.hadoop.hive.ql.metadata;
/**
* Hive consists of a fixed, well defined set of Dimensions. Each dimension has
* a type and id. Dimensions link columns in different tables
*
*/
public class Dimension {
protected Class dimensionType;
protected String dimensionId;
public Dimension(Class t, String id) {
dimensionType = t;
dimensionId = id;
}
public Class getDimensionType() {
return dimensionType;
}
public String getDimensionId() {
return dimensionId;
}
@Override
public boolean equals(Object o) {
if (super.equals(o)) {
return true;
}
if (o == null) {
return false;
}
if (o instanceof Dimension) {
Dimension d = (Dimension) o;
return (dimensionId.equals(d.dimensionId) && (dimensionType == d.dimensionType));
}
return false;
}
@Override
@SuppressWarnings("nls")
public String toString() {
return "Type=" + dimensionType.getName() + "," + "Id=" + dimensionId;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result
+ ((dimensionId == null) ? 0 : dimensionId.hashCode());
result = prime * result
+ ((dimensionType == null) ? 0 : dimensionType.hashCode());
return result;
}
public int hashCode(Object o) {
return dimensionType.hashCode() ^ dimensionId.hashCode();
}
}