org.apache.jackrabbit.core.query.lucene.constraint
Class ComparisonConstraint
java.lang.Object
org.apache.jackrabbit.core.query.lucene.constraint.SelectorBasedConstraint
org.apache.jackrabbit.core.query.lucene.constraint.ComparisonConstraint
- All Implemented Interfaces:
- Constraint, QueryObjectModelConstants
- Direct Known Subclasses:
- LikeConstraint
public class ComparisonConstraint
- extends SelectorBasedConstraint
- implements QueryObjectModelConstants
ComparisonConstraint
implements a comparison constraint.
Fields inherited from interface org.apache.jackrabbit.spi.commons.query.jsr283.qom.QueryObjectModelConstants |
JOIN_TYPE_INNER, JOIN_TYPE_LEFT_OUTER, JOIN_TYPE_RIGHT_OUTER, OPERATOR_EQUAL_TO, OPERATOR_GREATER_THAN, OPERATOR_GREATER_THAN_OR_EQUAL_TO, OPERATOR_LESS_THAN, OPERATOR_LESS_THAN_OR_EQUAL_TO, OPERATOR_LIKE, OPERATOR_NOT_EQUAL_TO, ORDER_ASCENDING, ORDER_DESCENDING |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ComparisonConstraint
public ComparisonConstraint(DynamicOperand operand1,
int operator,
Value operand2,
SelectorImpl selector)
- Creates a new comparision constraint.
- Parameters:
operand1
- the dynamic operand.operator
- the operator.operand2
- the static operand.selector
- the selector for this constraint.
evaluate
public boolean evaluate(ScoreNode[] row,
Name[] selectorNames,
EvaluationContext context)
throws IOException
- Evaluates this constraint for the given row.
- Specified by:
evaluate
in interface Constraint
- Parameters:
row
- the current row of score nodes.selectorNames
- the selector names associated with row
.context
- the evaluation context.
- Returns:
true
if the row satisfies the constraint,
false
otherwise.
- Throws:
IOException
- if an error occurs while evaluating the constraint.
evaluate
protected boolean evaluate(Value op1)
throws RepositoryException
- Evaluates this constraint for the given dynamic operand value
op1
.
- Parameters:
op1
- the current value of the dynamic operand.
- Returns:
true
if the given value satisfies the constraint.
- Throws:
RepositoryException
- if an error occurs while converting the
values.
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