com.facebook.hiveio.common.HiveTableDesc.java Source code

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Here is the source code for com.facebook.hiveio.common.HiveTableDesc.java

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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 com.facebook.hiveio.common;

import org.apache.hadoop.io.Writable;
import org.apache.hadoop.io.WritableUtils;

import com.google.common.base.Objects;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;

/**
 * Name of a table in Hive
 */
public class HiveTableDesc implements Writable {
    /** defautl database */
    private static final String DEFAULT_DATABASE = "default";

    /** Database where table is located */
    private String databaseName;
    /** Name of the table */
    private String tableName;

    /** Empty constructor */
    public HiveTableDesc() {
        databaseName = DEFAULT_DATABASE;
        tableName = "_unknown_";
    }

    /**
     * Constructor
     *
     * @param tableName table
     */
    public HiveTableDesc(String tableName) {
        this.databaseName = DEFAULT_DATABASE;
        this.tableName = tableName;
    }

    /**
     * Constructor
     *
     * @param databaseName database
     * @param tableName table
     */
    public HiveTableDesc(String databaseName, String tableName) {
        this.databaseName = databaseName;
        this.tableName = tableName;
    }

    public String getDatabaseName() {
        return databaseName;
    }

    public String getTableName() {
        return tableName;
    }

    public void setDatabaseName(String databaseName) {
        this.databaseName = databaseName;
    }

    public void setTableName(String tableName) {
        this.tableName = tableName;
    }

    /**
     * Convert to string in dot format
     *
     * @return database.name
     */
    public String dotString() {
        return databaseName + "." + tableName;
    }

    @Override
    public void readFields(DataInput in) throws IOException {
        databaseName = WritableUtils.readString(in);
        tableName = WritableUtils.readString(in);
    }

    @Override
    public void write(DataOutput out) throws IOException {
        WritableUtils.writeString(out, databaseName);
        WritableUtils.writeString(out, tableName);
    }

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

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        HiveTableDesc that = (HiveTableDesc) o;

        return Objects.equal(databaseName, that.databaseName) && Objects.equal(tableName, that.tableName);
    }

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