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java.lang.Objectorg.apache.pig.experimental.plan.Operator
org.apache.pig.experimental.logical.expression.LogicalExpression
org.apache.pig.experimental.logical.expression.ColumnExpression
public abstract class ColumnExpression
Super class for all column expressions, including projection, constants, and deferences.
Field Summary |
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Fields inherited from class org.apache.pig.experimental.logical.expression.LogicalExpression |
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type, uid |
Fields inherited from class org.apache.pig.experimental.plan.Operator |
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annotations, hashPrime, name, plan |
Constructor Summary | |
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ColumnExpression(String name,
OperatorPlan plan,
byte type)
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Method Summary |
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Methods inherited from class org.apache.pig.experimental.logical.expression.LogicalExpression |
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getNextUid, getType, getUid, neverUseForRealSetUid, resetNextUid, setUid, toString |
Methods inherited from class org.apache.pig.experimental.plan.Operator |
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accept, annotate, getAnnotation, getName, getPlan, isEqual, removeAnnotation |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public ColumnExpression(String name, OperatorPlan plan, byte type)
name
- of the operatorplan
- LogicalExpressionPlan this column expression is part oftype
- datatype of this column expression
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