com.aliyun.odps.sqa.commandapi.DescribeSchemaCommand Maven / Gradle / Ivy

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package com.aliyun.odps.sqa.commandapi;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

import com.aliyun.odps.Odps;
import com.aliyun.odps.OdpsException;
import com.aliyun.odps.type.TypeInfo;
import com.aliyun.odps.type.TypeInfoFactory;

class DescribeSchemaCommand extends SQLTaskCommand{

  private static final Map descSchemaMap = new LinkedHashMap<>();

  static {
    descSchemaMap.put("SchemaName", TypeInfoFactory.STRING);
  }

  @Override
  public List getResultHeaders() {
    return new ArrayList<>(descSchemaMap.keySet());
  }

  @Override
  public List getResultTypes() {
    return new ArrayList<>(descSchemaMap.values());
  }

  @Override
  public RecordIter run(Odps odps, CommandInfo commandInfo) throws OdpsException {
    String taskNamePrefix = "desc_schema_";
    return sqlTaskRun(odps, commandInfo, taskNamePrefix);
  }
}