Examples of org.springframework.batch.item.file.transform.FieldSet

Package org.springframework.batch.item.file.transform

Examples of org.springframework.batch.item.file.transform.FieldSet

org.springframework.batch.item.file.transform.FieldSet
Interface used by flat file input sources to encapsulate concerns of converting an array of Strings to Java native types. A bit like the role played by {@link ResultSet} in JDBC, clients will know the name or positionof strongly typed fields that they want to extract. @author Dave Syer

    mapper.setBeanFactory(context);
    mapper.setDistanceLimit(2);
    context.getBeanFactory().registerSingleton("bean", testNestedA);
    mapper.setPrototypeBeanName("bean");


    FieldSet fieldSet = new DefaultFieldSet(new String[] { "This is some dummy string", "1" }, new String[] {
        "VALUE_A", "VALUE_B" });


    TestNestedA result = mapper.mapFieldSet(fieldSet);


    assertEquals("This is some dummy string", result.getValueA());

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    StaticApplicationContext context = new StaticApplicationContext();
    mapper.setBeanFactory(context);
    context.getBeanFactory().registerSingleton("bean", testNestedC);
    mapper.setPrototypeBeanName("bean");


    FieldSet fieldSet = new DefaultFieldSet(new String[] { "1" }, new String[] { "foo" });


    TestNestedC result = mapper.mapFieldSet(fieldSet);


    // "foo" is similar enough to "value" that it matches - but only because
    // nothing else does...

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    mapper.setBeanFactory(context);
    context.getBeanFactory().registerSingleton("bean", testNestedA);
    mapper.setDistanceLimit(2);
    mapper.setPrototypeBeanName("bean");


    FieldSet fieldSet = new DefaultFieldSet(new String[] { "Another dummy", "2" }, new String[] {
        "TestObjectB.ValueA", "TestObjectB.TestObjectC.Value" });


    TestNestedA result = mapper.mapFieldSet(fieldSet);


    assertEquals("Another dummy", result.getTestObjectB().getValueA());

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    StaticApplicationContext context = new StaticApplicationContext();
    mapper.setBeanFactory(context);
    context.getBeanFactory().registerSingleton("bean", testNestedA);
    mapper.setPrototypeBeanName("bean");


    FieldSet fieldSet = new DefaultFieldSet(new String[] { "Another dummy" }, new String[] { "TestObjectB.foo" });


    try {
      mapper.mapFieldSet(fieldSet);
      fail("Expected NotWritablePropertyException");
    }

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    StaticApplicationContext context = new StaticApplicationContext();
    mapper.setBeanFactory(context);
    context.getBeanFactory().registerSingleton("bean", testNestedA);
    mapper.setPrototypeBeanName("bean");


    FieldSet fieldSet = new DefaultFieldSet(new String[] { "2" }, new String[] { "TestObjectA.garbage" });


    try {
      mapper.mapFieldSet(fieldSet);
      fail("Expected NotWritablePropertyException");
    }

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    StaticApplicationContext context = new StaticApplicationContext();
    mapper.setBeanFactory(context);
    context.getBeanFactory().registerSingleton("bean", nestedList);
    mapper.setPrototypeBeanName("bean");


    FieldSet fieldSet = new DefaultFieldSet(new String[] { "1", "2", "3" }, new String[] { "NestedC[0].Value",
        "NestedC[1].Value", "NestedC[2].Value" });


    mapper.mapFieldSet(fieldSet);


    assertEquals(1, nestedList.getNestedC().get(0).getValue());

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    StaticApplicationContext context = new StaticApplicationContext();
    mapper.setBeanFactory(context);
    context.getBeanFactory().registerSingleton("bean", nestedList);
    mapper.setPrototypeBeanName("bean");


    FieldSet fieldSet = new DefaultFieldSet(new String[] { "1", "2", "3" }, new String[] { "NestedC[0].Value",
        "NestedC[1].Value", "NestedC[2].Value" });


    mapper.mapFieldSet(fieldSet);


    assertEquals(1, nestedList.getNestedC().get(0).getValue());

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  public void testPaddedLongWithNoEditor() throws Exception {


    BeanWrapperFieldSetMapper<TestObject> mapper = new BeanWrapperFieldSetMapper<TestObject>();
    mapper.setTargetType(TestObject.class);


    FieldSet fieldSet = new DefaultFieldSet(new String[] { "00009" }, new String[] { "varLong" });
    TestObject bean = mapper.mapFieldSet(fieldSet);
    // since Spring 2.5.5 this is OK (before that BATCH-261)
    assertEquals(9, bean.getVarLong());
  }

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  public void testPaddedLongWithEditor() throws Exception {


    BeanWrapperFieldSetMapper<TestObject> mapper = new BeanWrapperFieldSetMapper<TestObject>();
    mapper.setTargetType(TestObject.class);


    FieldSet fieldSet = new DefaultFieldSet(new String[] { "00009" }, new String[] { "varLong" });


    mapper.setCustomEditors(Collections.singletonMap(Long.TYPE, new CustomNumberEditor(Long.class, NumberFormat
        .getNumberInstance(), true)));
    TestObject bean = mapper.mapFieldSet(fieldSet);

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  public void testPaddedLongWithDefaultAndCustomEditor() throws Exception {


    BeanWrapperFieldSetMapper<TestObject> mapper = new BeanWrapperFieldSetMapper<TestObject>();
    mapper.setTargetType(TestObject.class);


    FieldSet fieldSet = new DefaultFieldSet(new String[] { "00009", "78" }, new String[] { "varLong", "varInt" });


    mapper.setCustomEditors(Collections.singletonMap(Long.TYPE, new CustomNumberEditor(Long.class, NumberFormat
        .getNumberInstance(), true)));
    TestObject bean = mapper.mapFieldSet(fieldSet);

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