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java.lang.Objectunity.functions.Expression
unity.functions.Aggregate_Function
unity.functions.A_Avg
public class A_Avg
Constructor Summary | |
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A_Avg(Expression exp)
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Method Summary | |
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void |
add(Tuple t)
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java.lang.Object |
compute()
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void |
reset()
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java.lang.String |
toString(Relation relation,
Attribute outputAttribute)
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Methods inherited from class unity.functions.Aggregate_Function |
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evaluate |
Methods inherited from class unity.functions.Expression |
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computeType, getAttributeIndexReferences, getChild, getExprLocs, getNumChildren, getParent, getReturnType, hasChildren, setParent, setReturnType, 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 A_Avg(Expression exp)
Method Detail |
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public void reset()
reset
in class Aggregate_Function
public java.lang.Object compute()
compute
in class Aggregate_Function
public void add(Tuple t)
add
in class Aggregate_Function
public java.lang.String toString(Relation relation, Attribute outputAttribute)
toString
in class Expression
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