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java.lang.Objectorg.apache.jackrabbit.core.query.lucene.join.OperandEvaluator
public class OperandEvaluator
Evaluator of QOM operands
. This class evaluates operands
in the context of a value factory
, a set of bind
variables and possibly a query result row.
Constructor Summary | |
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OperandEvaluator(ValueFactory factory,
Map<String,Value> variables)
Creates an operand evaluator for the given value factory and set of bind variables. |
Method Summary | |
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Value |
getValue(Operand operand,
Row row)
Returns the value of the given operand in the context of the given row. |
Value |
getValue(StaticOperand operand)
Returns the value of the given static operand ( literal or bind variable ). |
Value |
getValue(StaticOperand operand,
int type)
|
Value[] |
getValues(Operand operand,
Row row)
Evaluates the given operand in the context of the given row. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public OperandEvaluator(ValueFactory factory, Map<String,Value> variables)
factory
- value factoryvariables
- bind variablesMethod Detail |
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public Value getValue(StaticOperand operand, int type) throws RepositoryException
RepositoryException
public Value getValue(StaticOperand operand) throws RepositoryException
literal
or bind variable
).
operand
- static operand to be evaluated
RepositoryException
- if a named bind variable is not found,
or if the operand type is unknownpublic Value getValue(Operand operand, Row row) throws RepositoryException
getValues(Operand, Row)
method for more accurate results.
operand
- operand to be evaluatedrow
- query result row
RepositoryException
public Value[] getValues(Operand operand, Row row) throws RepositoryException
operand
- operand to be evaluatedrow
- query result row
RepositoryException
- if the operand can't be evaluated
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