co.cask.cdap.data2.util.TableId.java Source code

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Here is the source code for co.cask.cdap.data2.util.TableId.java

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/*
 * Copyright  2015 Cask Data, 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 co.cask.cdap.data2.util;

import co.cask.cdap.proto.Id;
import com.google.common.base.Objects;
import com.google.common.base.Preconditions;

/**
 * Identifier for an HBase tables that contains a namespace and a table name
 */
public class TableId {
    private final Id.Namespace namespace;
    private final String tableName;

    private TableId(Id.Namespace namespace, String tableName) {
        this.namespace = namespace;
        this.tableName = tableName;
    }

    public Id.Namespace getNamespace() {
        return namespace;
    }

    public String getTableName() {
        return tableName;
    }

    public static TableId from(String namespace, String tableName) {
        return from(Id.Namespace.from(namespace), tableName);
    }

    public static TableId from(Id.Namespace namespaceId, String tableName) {
        Preconditions.checkArgument(tableName != null, "Table name should not be null.");
        // Id.Namespace already checks for non-null namespace
        return new TableId(namespaceId, tableName);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (!(o instanceof TableId)) {
            return false;
        }

        TableId that = (TableId) o;
        return Objects.equal(namespace, that.getNamespace()) && Objects.equal(tableName, that.getTableName());
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(namespace, tableName);
    }

    @Override
    public String toString() {
        return Objects.toStringHelper(this).add("namespace", namespace).add("tableName", tableName).toString();
    }
}