Examples of org.apache.pig.EvalFunc

org.apache.pig.EvalFunc
The class is used to implement functions to be applied to fields in a dataset. The function is applied to each Tuple in the set. The programmer should not make assumptions about state maintained between invocations of the exec() method since the Pig runtime will schedule and localize invocations based on information provided at runtime. The programmer also should not make assumptions about when or how many times the class will be instantiated, since it may be instantiated multiple times in both the front and back end.

    public static final byte STREAMTOPIGFUNC = 64;


    public static void tryCasting(Object func, byte funcType) throws Exception {
        switch(funcType) {
        case FunctionType.EVALFUNC:
            EvalFunc evalFunc = (EvalFunc) func;
            break;
        case FunctionType.COMPARISONFUNC:
            ComparisonFunc comparisonFunc = (ComparisonFunc) func;
            break;
        case FunctionType.LOADFUNC:

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Related Classes of org.apache.pig.EvalFunc

org.apache.pig.builtin.OutputSchema

org.apache.pig.impl.logicalLayer.schema.TupleSchema

org.apache.pig.parser.FunctionType

java.lang.reflect.Type

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