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java.lang.Objectsimpledb.Predicate
public class Predicate
Predicate compares tuples to a specified Field value.
Nested Class Summary | |
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static class |
Predicate.Op
Constants used for return codes in Field.compare |
Constructor Summary | |
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Predicate(int field,
Predicate.Op op,
Field operand)
Constructor. |
Method Summary | |
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boolean |
filter(Tuple t)
Compares the field number of t specified in the constructor to the operand field specified in the constructor using the operator specific in the constructor. |
java.lang.String |
toString()
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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 Predicate(int field, Predicate.Op op, Field operand)
field
- field number of passed in tuples to compare against.op
- operation to use for comparisonoperand
- field value to compare passed in tuples toMethod Detail |
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public boolean filter(Tuple t)
t
- The tuple to compare against
public java.lang.String toString()
toString
in class java.lang.Object
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