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NIFI-3951: Fixed bug that calculated the index incorrectly when filtering for ArrayIndexPath 

This closes #1835.

Signed-off-by: Bryan Bende <bbende@apache.org>
This commit is contained in:
Mark Payne 2017-05-22 09:45:35 -04:00 committed by Bryan Bende
parent 7f8987471d
commit 1a3c525dd6
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1 changed files with 6 additions and 2 deletions
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8
nifi-commons/nifi-record-path/src/main/java/org/apache/nifi/record/path/paths/ArrayIndexPath.java
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@ -42,16 +42,20 @@ public class ArrayIndexPath extends RecordPathSegment {
return parentResult
.filter(Filters.fieldTypeFilter(RecordFieldType.ARRAY))
.filter(fieldValue -> fieldValue.getValue() != null && ((Object[]) fieldValue.getValue()).length >= Math.abs(index) - 1)
.filter(fieldValue -> fieldValue.getValue() != null && ((Object[]) fieldValue.getValue()).length > getArrayIndex(((Object[]) fieldValue.getValue()).length))
.map(fieldValue -> {
final ArrayDataType arrayDataType = (ArrayDataType) fieldValue.getField().getDataType();
final DataType elementDataType = arrayDataType.getElementType();
final RecordField arrayField = new RecordField(fieldValue.getField().getFieldName(), elementDataType);
final Object[] values = (Object[]) fieldValue.getValue();
final int arrayIndex = index < 0 ? values.length + index : index;
final int arrayIndex = getArrayIndex(values.length);
final RecordField elementField = new RecordField(arrayField.getFieldName() + "[" + arrayIndex + "]", elementDataType);
final FieldValue result = new ArrayIndexFieldValue(values[arrayIndex], elementField, fieldValue, arrayIndex);
return result;
});
}
private int getArrayIndex(final int arrayLength) {
return index < 0 ? arrayLength + index : index;
}
}