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java.lang.Objectunity.functions.Expression
unity.functions.Aggregate_Function
public abstract class Aggregate_Function
Constructor Summary | |
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Aggregate_Function()
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Method Summary | |
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abstract void |
add(Tuple t)
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abstract java.lang.Object |
compute()
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java.lang.Object |
evaluate(Tuple t)
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abstract void |
reset()
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Methods inherited from class unity.functions.Expression |
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computeType, getAttributeIndexReferences, getChild, getExprLocs, getNumChildren, getParent, getReturnType, hasChildren, setParent, setReturnType, toString, toString |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public Aggregate_Function()
Method Detail |
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public abstract void reset()
public abstract void add(Tuple t)
public abstract java.lang.Object compute()
public java.lang.Object evaluate(Tuple t)
evaluate
in class Expression
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