com.sun.labs.minion.retrieval
Class Or

java.lang.Object
  com.sun.labs.minion.retrieval.QueryElement
      com.sun.labs.minion.retrieval.Operator
          com.sun.labs.minion.retrieval.Or

All Implemented Interfaces:

java.lang.Comparable

public class Or
extends Operator

Field Summary

protected static java.lang.String

logTag

Fields inherited from class com.sun.labs.minion.retrieval.Operator

operands

Fields inherited from class com.sun.labs.minion.retrieval.QueryElement

estSize, fieldMultipliers, inOrder, keepPositions, order, part, qc, qs, searchFieldNames, searchFields, strictEval, wc, wf

Constructor Summary

Or(java.util.List operands)
Constructs an AND operator that takes a list of operands.

Method Summary

protected int	calculateEstimatedSize() Estimates the size of the results set.
ArrayGroup	eval(ArrayGroup ag) Evaluates this operator, returning the results.

Methods inherited from class com.sun.labs.minion.retrieval.Operator

addSearchFieldName, getOperands, getQueryTerms, setOperands, setPartition, setQueryConfig, setWeightingComponents, setWeightingFunction, toString, toString, toStringMod

Methods inherited from class com.sun.labs.minion.retrieval.QueryElement

compareTo, dump, estimateSize, getInOrder, getOrder, getQueryStats, getQueryTerms, getSearchFieldNames, setInOrder, setOrder, setQueryStats, setSearchFields

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

logTag

protected static java.lang.String logTag

Constructor Detail

Or

public Or(java.util.List operands)

Constructs an AND operator that takes a list of operands.

Method Detail

calculateEstimatedSize

protected int calculateEstimatedSize()

Estimates the size of the results set. This is the sum of the estimated sizes for each of the operands.

Specified by:

calculateEstimatedSize in class QueryElement

Returns:

The estimated size of the results set for this element. This is meant to be an as-tight-as-possible estimate of the results set size. It is acceptable to overestimate, but not to underestimate the size of the result set.

eval

public ArrayGroup eval(ArrayGroup ag)

Evaluates this operator, returning the results.

Overrides:

eval in class QueryElement