public class ConstantExpression extends ExpressionOperator
PhysicalOperator.OriginalLocationalias, illustrator, input, inputAttached, inputs, lineageTracer, mBagFactory, mTupleFactory, outputs, parentPlan, pigLogger, reporter, requestedParallelism, RESULT_EMPTY, RESULT_EOP, resultType| Constructor and Description |
|---|
ConstantExpression(OperatorKey k) |
ConstantExpression(OperatorKey k,
int rp) |
| Modifier and Type | Method and Description |
|---|---|
ConstantExpression |
clone()
Make a deep copy of this operator.
|
List<ExpressionOperator> |
getChildExpressions()
Get the child expressions of this expression
|
Result |
getNextBigDecimal() |
Result |
getNextBigInteger() |
Result |
getNextBoolean() |
Result |
getNextDataBag() |
Result |
getNextDataByteArray() |
Result |
getNextDateTime() |
Result |
getNextDouble() |
Result |
getNextFloat() |
Result |
getNextInteger() |
Result |
getNextLong() |
Result |
getNextMap() |
Result |
getNextString() |
Result |
getNextTuple() |
Object |
getValue() |
Tuple |
illustratorMarkup(Object in,
Object out,
int eqClassIndex)
input tuple mark up to be illustrate-able
|
String |
name() |
void |
setValue(Object value) |
boolean |
supportsMultipleInputs()
Indicates whether this operator supports multiple inputs.
|
boolean |
supportsMultipleOutputs()
Indicates whether this operator supports multiple outputs.
|
void |
visit(PhyPlanVisitor v)
Visit this node with the provided visitor.
|
accumChild, containUDF, setIllustrator, toStringaddOriginalLocation, addOriginalLocation, attachInput, cloneHelper, clonePlans, copyAliasFrom, detachInput, getAlias, getAliasString, getIllustrator, getInputs, getLogger, getNext, getOriginalLocations, getParentPlan, getPigLogger, getReporter, getRequestedParallelism, getResultType, isAccumStarted, isAccumulative, isBlocking, isEndOfAllInput, isInputAttached, processInput, reset, setAccumEnd, setAccumStart, setAccumulative, setInputs, setParentPlan, setPigLogger, setReporter, setRequestedParallelism, setResultType, staticDataCleanupcompareTo, equals, getOperatorKey, getProjectionMap, hashCode, regenerateProjectionMap, rewire, unsetProjectionMappublic ConstantExpression(OperatorKey k)
public ConstantExpression(OperatorKey k, int rp)
public String name()
name in class Operator<PhyPlanVisitor>public boolean supportsMultipleInputs()
OperatorsupportsMultipleInputs in class Operator<PhyPlanVisitor>public boolean supportsMultipleOutputs()
OperatorsupportsMultipleOutputs in class ExpressionOperatorpublic void visit(PhyPlanVisitor v) throws VisitorException
Operatorvisit in class ExpressionOperatorv - Visitor to visit with.VisitorException - if the visitor has a problem.public Object getValue()
public void setValue(Object value)
public Result getNextDataBag() throws ExecException
getNextDataBag in class ExpressionOperatorExecExceptionpublic Result getNextDataByteArray() throws ExecException
getNextDataByteArray in class PhysicalOperatorExecExceptionpublic Result getNextDouble() throws ExecException
getNextDouble in class PhysicalOperatorExecExceptionpublic Result getNextFloat() throws ExecException
getNextFloat in class PhysicalOperatorExecExceptionpublic Result getNextInteger() throws ExecException
getNextInteger in class PhysicalOperatorExecExceptionpublic Result getNextLong() throws ExecException
getNextLong in class PhysicalOperatorExecExceptionpublic Result getNextDateTime() throws ExecException
getNextDateTime in class PhysicalOperatorExecExceptionpublic Result getNextString() throws ExecException
getNextString in class PhysicalOperatorExecExceptionpublic Result getNextTuple() throws ExecException
getNextTuple in class PhysicalOperatorExecExceptionpublic Result getNextBoolean() throws ExecException
getNextBoolean in class PhysicalOperatorExecExceptionpublic Result getNextMap() throws ExecException
getNextMap in class PhysicalOperatorExecExceptionpublic Result getNextBigInteger() throws ExecException
getNextBigInteger in class PhysicalOperatorExecExceptionpublic Result getNextBigDecimal() throws ExecException
getNextBigDecimal in class PhysicalOperatorExecExceptionpublic ConstantExpression clone() throws CloneNotSupportedException
ExpressionOperatorpublic List<ExpressionOperator> getChildExpressions()
getChildExpressions in class ExpressionOperatorpublic Tuple illustratorMarkup(Object in, Object out, int eqClassIndex)
Illustrablein - input tupleout - output tuple before wrapped in ExampleTupleeqClassIndex - index into equivalence classes in illustratorCopyright © 2007-2017 The Apache Software Foundation