/*
* 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.aliyun.odps.data;
import java.util.Arrays;
import java.util.LinkedHashMap;
import java.util.Map.Entry;
import com.aliyun.odps.utils.StringUtils;
import com.aliyun.odps.PartitionSpec;
/**
* 表信息，用于定义作业的输入和输出以及表类型的资源.
*/
public class TableInfo {
public static final String DEFAULT_LABEL = "__default__";
public static final String INNER_OUTPUT_LABEL = "INNER_OUTPUT";
private String projectName;
private String tblName;
private LinkedHashMap<String, String> partSpec = new LinkedHashMap<String, String>();
private String[] cols;
private String label = DEFAULT_LABEL;
private String mapperClassName;
public static class TableInfoBuilder {
private TableInfo table = new TableInfo();
public TableInfoBuilder projectName(String projectName) {
table.setProjectName(projectName);
return this;
}
public TableInfoBuilder mapperClass(@SuppressWarnings("rawtypes") Class mapperClass) {
table.setMapperClass(mapperClass);
return this;
}
public TableInfoBuilder tableName(String tblName) {
table.setTableName(tblName);
return this;
}
public TableInfoBuilder partSpec(LinkedHashMap<String, String> partSpec) {
table.setPartSpec(partSpec);
return this;
}
public TableInfoBuilder partSpec(PartitionSpec partSpec) {
if (partSpec != null && !partSpec.isEmpty()) {
LinkedHashMap<String, String> map = new LinkedHashMap<String, String>();
for (String key : partSpec.keys()) {
map.put(key, partSpec.get(key));
}
table.setPartSpec(map);
}
return this;
}
public TableInfoBuilder partSpec(String partPath) {
table.setPartSpec(partPath);
return this;
}
public TableInfoBuilder cols(String[] cols) {
table.setCols(cols);
return this;
}
public TableInfoBuilder label(String label) {
table.setLable(label);
return this;
}
public TableInfo build() {
return new TableInfo(table);
}
}
/**
* 给定表名和分区构造一个表信息对象
*
* @param projectName
* @param tblName
* @param partSpec
* @param cols
* @param lable
*/
public TableInfo(String projectName, String tblName, LinkedHashMap<String, String> partSpec,
String[] cols, String lable) {
this.projectName = projectName;
this.tblName = tblName;
this.partSpec = partSpec;
this.cols = cols;
this.label = lable;
validate();
}
public TableInfo() {
}
public TableInfo(TableInfo table) {
this(table.projectName, table.tblName, table.partSpec, table.cols, table.label);
this.mapperClassName = table.mapperClassName;
}
public static TableInfoBuilder builder() {
return new TableInfoBuilder();
}
public void validate() {
if (tblName == null || tblName.trim().isEmpty()) {
throw new RuntimeException("ODPS-0730001: table should not be null or empty: " + tblName);
}
}
/**
* 获取表的Project.
*
* @return 表的Project
*/
public String getProjectName() {
return projectName;
}
/**
* 获取分区描述，分区描述是一个PartitionSpec对象.
*
* @return 分区
*/
public PartitionSpec getPartitionSpec() {
PartitionSpec partitionSpec = new PartitionSpec();
for (String key : partSpec.keySet()) {
partitionSpec.set(key, partSpec.get(key));
}
return partitionSpec;
}
/**
* 获取分区描述，分区描述是一个有序Map, 其中key是分区名，value是对应分区的取值.
*
* @return 分区
*/
public LinkedHashMap<String, String> getPartSpec() {
return partSpec;
}
/**
* 获取分区路径. 分区路径是一个由/分隔,=对应的字符串, 会以／结尾. 例如ds=20131230/hr=10/
*
* @return 分区路径
*/
public String getPartPath() {
StringBuilder sb = new StringBuilder();
if (partSpec != null) {
for (Entry<String, String> e : partSpec.entrySet()) {
sb.append(e.getKey()).append(DELIMITER).append(e.getValue()).append(SEPERATOR);
}
}
return sb.toString();
}
/**
* 设置分区描述
*
* @param partSpec
*/
public void setPartSpec(LinkedHashMap<String, String> partSpec) {
this.partSpec = partSpec;
}
/**
* 设置分区描述
*
* @param partSpec
*/
public void setPartSpec(String partPath) {
this.partSpec = getPartSpecFromPath(partPath);
}
/**
* 获取查询列
*
* @return
*/
public String[] getCols() {
return cols;
}
/**
* 设置查询列
*
* @param cols
*/
public void setCols(String[] cols) {
this.cols = cols;
}
/**
* 获取表名
*
* @return
*/
public String getTableName() {
return tblName;
}
/**
* 设置表名
*
* @param name
*/
public void setTableName(String name) {
if (name == null || name.trim().isEmpty()) {
throw new RuntimeException(
"ODPS-0730001: table should not be null or empty: " + name);
}
String[] ss = StringUtils.splitPreserveAllTokens(name.trim(), '.');
if (ss.length == 2) {
if (ss[0].trim().isEmpty() || ss[1].trim().isEmpty()) {
throw new RuntimeException("ODPS-0730001: error table format: " + name);
}
this.projectName = ss[0];
this.tblName = ss[1];
} else if (ss.length == 1) {
if (ss[0].trim().isEmpty()) {
throw new RuntimeException("ODPS-0730001: error table format: " + name);
}
this.tblName = ss[0];
} else {
throw new RuntimeException("ODPS-0730001: error table format: " + name);
}
}
/**
* 获取标签
*
* @return
*/
public String getLabel() {
return label;
}
/**
* 设置标签
*
* @param lable
*/
public void setLable(String lable) {
this.label = lable;
}
/**
* 获取输入表对应的mapper类
*
* @return mapper类
*/
public Class<?> getMapperClass() {
if (StringUtils.isEmpty(mapperClassName)) {
return null;
}
Class<?> mapperClass = null;
try {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
if (classLoader == null) {
classLoader = getClass().getClassLoader();
}
mapperClass = Class.forName(mapperClassName, false, classLoader);
} catch (ClassNotFoundException e) {
throw new RuntimeException("ODPS-0730001: ClassNotFoundException - " + e.getMessage());
}
return mapperClass;
}
/**
* 设置输入表对应的mapper类
*
* @param mapperClass
*/
public void setMapperClass(Class<?> mapperClass) {
mapperClassName = mapperClass.getName();
}
/**
* 设置Project名
*
* @param projectName
*/
public void setProjectName(String projectName) {
this.projectName = projectName;
}
@Override
public boolean equals(Object that) {
if (!(that instanceof TableInfo)) {
return false;
}
TableInfo t = (TableInfo) that;
if (stringEquals(projectName, t.projectName) && stringEquals(tblName, t.tblName)
&& Arrays.equals(this.cols, t.cols) && stringEquals(label, t.label)
&& this.partSpec.equals(t.partSpec)) {
return true;
}
return false;
}
private transient static final String SEPERATOR = "/";
private transient static final String DELIMITER = "=";
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
if (projectName != null) {
sb.append(projectName).append('.');
}
sb.append(tblName);
if (partSpec != null && !partSpec.isEmpty()) {
sb.append(partSpec.toString());
}
return sb.toString();
}
private static boolean stringEquals(final String cs1, final String cs2) {
if (cs1 == cs2) {
return true;
}
if (cs1 == null || cs2 == null) {
return false;
}
return cs1.equals(cs2);
}
private LinkedHashMap<String, String> getPartSpecFromPath(String path) {
LinkedHashMap<String, String> map = new LinkedHashMap<String, String>();
if (path != null && !path.trim().isEmpty()) {
String[] parts = path.split(SEPERATOR);
for (String part : parts) {
String[] ss = part.split(DELIMITER);
if (ss.length != 2) {
throw new RuntimeException("ODPS-0730001: error part spec format: " + path);
}
map.put(ss[0], ss[1]);
}
}
return map;
}
}