content: /*
   * 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.udf.local.examples;
  
  import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.util.Iterator;
  
  import com.aliyun.odps.udf.ExecutionContext;
  import com.aliyun.odps.udf.UDF;
  import com.aliyun.odps.udf.UDFException;
  
  public class UdfResource extends UDF {
  
    ExecutionContext ctx;
    long fileResourceLineCount;
    long tableResource1RecordCount;
    long tableResource2RecordCount;
  
    @Override
    public void setup(ExecutionContext ctx) throws UDFException {
      this.ctx = ctx;
      try {
        InputStream in = ctx.readResourceFileAsStream("file_resource.txt");
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
        String line;
        fileResourceLineCount = 0;
        while ((line = br.readLine()) != null) {
          fileResourceLineCount++;
        }
        br.close();
  
        Iterator<Object[]> iterator = ctx.readResourceTable("table_resource1").iterator();
        tableResource1RecordCount = 0;
        while (iterator.hasNext()) {
          tableResource1RecordCount++;
          iterator.next();
        }
  
        iterator = ctx.readResourceTable("table_resource2").iterator();
        tableResource2RecordCount = 0;
        while (iterator.hasNext()) {
          tableResource2RecordCount++;
          iterator.next();
        }
  
      } catch (IOException e) {
        throw new UDFException(e);
      }
    }
  
    public String evaluate(String a, String b) {
      return "ss2s:" + a + "," + b + "|fileResourceLineCount=" + fileResourceLineCount
             + "|tableResource1RecordCount=" + tableResource1RecordCount
             + "|tableResource2RecordCount="
             + tableResource2RecordCount;
    }
  
  }
  