How to use

create

method

in

org.apache.hadoop.hive.serde2.objectinspector.SettableUnionObjectInspector

@Override
public Object initValue(Object ignored) {
 return ((SettableUnionObjectInspector) this.objectInspector).create();
}

public UnionConverter(ObjectInspector inputOI,
  SettableUnionObjectInspector outputOI) {
 if (inputOI instanceof UnionObjectInspector) {
  this.inputOI = (UnionObjectInspector)inputOI;
  this.outputOI = outputOI;
  inputTagsOIs = this.inputOI.getObjectInspectors();
  outputTagsOIs = outputOI.getObjectInspectors();
  // If the output has some extra fields, set them to NULL in convert().
  int minFields = Math.min(inputTagsOIs.size(), outputTagsOIs.size());
  fieldConverters = new ArrayList<Converter>(minFields);
  for (int f = 0; f < minFields; f++) {
   fieldConverters.add(getConverter(inputTagsOIs.get(f), outputTagsOIs.get(f)));
  }
  // Create an empty output object which will be populated when convert() is invoked.
  output = outputOI.create();
 } else if (!(inputOI instanceof VoidObjectInspector)) {
  throw new RuntimeException("Hive internal error: conversion of " +
    inputOI.getTypeName() + " to " + outputOI.getTypeName() +
    "not supported yet.");
 }
}

private Object convertUnionRowColumn(
  ColumnVector colVector, int batchIndex, Field field) throws IOException {
 final SettableUnionObjectInspector unionOI = (SettableUnionObjectInspector) field.objectInspector;
 final UnionComplexTypeHelper unionHelper = (UnionComplexTypeHelper) field.getComplexHelper();
 final Field[] fields = unionHelper.getFields();
 final UnionColumnVector unionColumnVector = (UnionColumnVector) colVector;
 final Object union = unionOI.create();
 final int tag = deserializeRead.currentInt;
 unionOI.setFieldAndTag(union, new StandardUnion((byte) tag,
   convertComplexFieldRowColumn(unionColumnVector.fields[tag], batchIndex, fields[tag])), (byte) tag);
 deserializeRead.finishComplexVariableFieldsType();
 return union;
}

public UnionConverter(ObjectInspector inputOI,
  SettableUnionObjectInspector outputOI) {
 if (inputOI instanceof UnionObjectInspector) {
  this.inputOI = (UnionObjectInspector)inputOI;
  this.outputOI = outputOI;
  inputFields = this.inputOI.getObjectInspectors();
  outputFields = outputOI.getObjectInspectors();
  // If the output has some extra fields, set them to NULL in convert().
  int minFields = Math.min(inputFields.size(), outputFields.size());
  fieldConverters = new ArrayList<Converter>(minFields);
  for (int f = 0; f < minFields; f++) {
   fieldConverters.add(getConverter(inputFields.get(f), outputFields.get(f)));
  }
  // Create an empty output object which will be populated when convert() is invoked.
  output = outputOI.create();
 } else if (!(inputOI instanceof VoidObjectInspector)) {
  throw new RuntimeException("Hive internal error: conversion of " +
    inputOI.getTypeName() + " to " + outputOI.getTypeName() +
    "not supported yet.");
 }
}

public UnionConverter(ObjectInspector inputOI,
  SettableUnionObjectInspector outputOI) {
 if (inputOI instanceof UnionObjectInspector) {
  this.inputOI = (UnionObjectInspector)inputOI;
  this.outputOI = outputOI;
  inputFields = this.inputOI.getObjectInspectors();
  outputFields = outputOI.getObjectInspectors();
  // If the output has some extra fields, set them to NULL in convert().
  int minFields = Math.min(inputFields.size(), outputFields.size());
  fieldConverters = new ArrayList<Converter>(minFields);
  for (int f = 0; f < minFields; f++) {
   fieldConverters.add(getConverter(inputFields.get(f), outputFields.get(f)));
  }
  // Create an empty output object which will be populated when convert() is invoked.
  output = outputOI.create();
 } else if (!(inputOI instanceof VoidObjectInspector)) {
  throw new RuntimeException("Hive internal error: conversion of " +
    inputOI.getTypeName() + " to " + outputOI.getTypeName() +
    "not supported yet.");
 }
}

public UnionConverter(ObjectInspector inputOI,
  SettableUnionObjectInspector outputOI) {
 if (inputOI instanceof UnionObjectInspector) {
  this.inputOI = (UnionObjectInspector)inputOI;
  this.outputOI = outputOI;
  inputTagsOIs = this.inputOI.getObjectInspectors();
  outputTagsOIs = outputOI.getObjectInspectors();
  // If the output has some extra fields, set them to NULL in convert().
  int minFields = Math.min(inputTagsOIs.size(), outputTagsOIs.size());
  fieldConverters = new ArrayList<Converter>(minFields);
  for (int f = 0; f < minFields; f++) {
   fieldConverters.add(getConverter(inputTagsOIs.get(f), outputTagsOIs.get(f)));
  }
  // Create an empty output object which will be populated when convert() is invoked.
  output = outputOI.create();
 } else if (!(inputOI instanceof VoidObjectInspector)) {
  throw new RuntimeException("Hive internal error: conversion of " +
    inputOI.getTypeName() + " to " + outputOI.getTypeName() +
    "not supported yet.");
 }
}

public UnionConverter(ObjectInspector inputOI,
  SettableUnionObjectInspector outputOI) {
 if (inputOI instanceof UnionObjectInspector) {
  this.inputOI = (UnionObjectInspector)inputOI;
  this.outputOI = outputOI;
  inputFields = this.inputOI.getObjectInspectors();
  outputFields = outputOI.getObjectInspectors();
  // If the output has some extra fields, set them to NULL in convert().
  int minFields = Math.min(inputFields.size(), outputFields.size());
  fieldConverters = new ArrayList<Converter>(minFields);
  for (int f = 0; f < minFields; f++) {
   fieldConverters.add(getConverter(inputFields.get(f), outputFields.get(f)));
  }
  // Create an empty output object which will be populated when convert() is invoked.
  output = outputOI.create();
 } else if (!(inputOI instanceof VoidObjectInspector)) {
  throw new RuntimeException("Hive internal error: conversion of " +
    inputOI.getTypeName() + " to " + outputOI.getTypeName() +
    "not supported yet.");
 }
}