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git-svn-id: https://src.springframework.org/svn/spring-framework/trunk@75 50f2f4bb-b051-0410-bef5-90022cba6387
This commit is contained in:
Andy Clement 2008-08-17 01:27:59 +00:00
parent 07076642a3
commit 18b42bb979
1 changed files with 14 additions and 7 deletions
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21
org.springframework.expression/src/main/java/org/springframework/expression/spel/ast/OperatorBetween.java
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@ -20,14 +20,14 @@ import java.util.List;
import org.antlr.runtime.Token;
import org.springframework.expression.EvaluationException;
import org.springframework.expression.TypeComparator;
import org.springframework.expression.spel.ExpressionState;
import org.springframework.expression.spel.SpelException;
import org.springframework.expression.spel.SpelMessages;
import org.springframework.expression.spel.ExpressionState;
/**
* Represents the between operator. The left operand to between must be a single value and the right operand must be a
* list - this operator returns true if the left operand is between (using the registered comparator) the two elements
* in the list.
* in the list. The definition of between being inclusive follows the SQL BETWEEN definition.
*
* @author Andy Clement
*/
@ -42,8 +42,16 @@ public class OperatorBetween extends Operator {
return "between";
}
/**
* Returns a boolean based on whether a value is in the range expressed. The first operand is any value whilst the
* second is a list of two values - those two values being the bounds allowed for the first operand (inclusive).
*
* @param state the expression state
* @return true if the left operand is in the range specified, false otherwise
* @throws EvaluationException if there is a problem evaluating the expression
*/
@Override
public Object getValue(ExpressionState state) throws EvaluationException {
public Boolean getValue(ExpressionState state) throws EvaluationException {
Object left = getLeftOperand().getValue(state);
Object right = getRightOperand().getValue(state);
if (!(right instanceof List) || ((List<?>) right).size() != 2) {
@ -55,11 +63,10 @@ public class OperatorBetween extends Operator {
Object high = l.get(1);
TypeComparator comparator = state.getTypeComparator();
try {
// TODO between is inclusive, is that OK
return (comparator.compare(left, low) >= 0 && comparator.compare(left, high) <= 0);
} catch (SpelException ee) {
ee.setPosition(getCharPositionInLine());
throw ee;
} catch (SpelException ex) {
ex.setPosition(getCharPositionInLine());
throw ex;
}
}