org.cumulus4j.store.query.method
Interface MethodEvaluator

All Known Implementing Classes:

AbstractMethodEvaluator, CollectionContainsEvaluator, CollectionIsEmptyEvaluator, CollectionSizeEvaluator, DateGetDayEvaluator, DateGetHourEvaluator, DateGetMinuteEvaluator, DateGetMonthEvaluator, DateGetSecondEvaluator, DateGetYearEvaluator, MapContainsKeyEvaluator, MapContainsValueEvaluator, MapIsEmptyEvaluator, MapSizeEvaluator, StringEndsWithEvaluator, StringEqualsEvaluator, StringEqualsIgnoreCaseEvaluator, StringIndexOfEvaluator, StringLengthEvaluator, StringMatchesEvaluator, StringStartsWithEvaluator, StringSubstringEvaluator, StringToLowerCaseEvaluator, StringToUpperCaseEvaluator

public interface MethodEvaluator

Interface for the evaluator for a method.

Method Summary

Set<Long>	evaluate(QueryEvaluator queryEval, InvokeExpressionEvaluator invokeExprEval, Expression invokedExpr, ResultDescriptor resultDesc) Method to evaluate the provided method invocation invoking on a PrimaryExpression.
boolean	requiresComparisonArgument() Whether this evaluator requires a comparison argument to perform its evaluation.
void	setCompareToArgument(Object obj) Method to set any argument to be compared with (when evaluating method invocation and comparison).

Method Detail

evaluate

Set<Long> evaluate(QueryEvaluator queryEval,
                   InvokeExpressionEvaluator invokeExprEval,
                   Expression invokedExpr,
                   ResultDescriptor resultDesc)

Method to evaluate the provided method invocation invoking on a PrimaryExpression.

Parameters:

queryEval - Query evaluator

invokeExprEval - Evaluator for the InvokeExpression that this is processing

invokedExpr - Expression on which we are invoking the method

resultDesc - Result descriptor

Returns:

those dataEntryIDs that match the query criteria for the specified resultSymbol or null, if the symbol is not supported

requiresComparisonArgument

boolean requiresComparisonArgument()

Whether this evaluator requires a comparison argument to perform its evaluation.

Returns:

True if needing the comparison argument

setCompareToArgument

void setCompareToArgument(Object obj)

Method to set any argument to be compared with (when evaluating method invocation and comparison). Should be set prior to call of evaluate(...).

Parameters:

obj - The compared argument