org.openadaptor.adaptor.value.predicate
Class DoublePredicate

java.lang.Object
  org.openadaptor.adaptor.value.predicate.AbstractComparisonPredicate
      org.openadaptor.adaptor.value.predicate.DoublePredicate

All Implemented Interfaces:

XFPredicate

public class DoublePredicate
extends AbstractComparisonPredicate

Compares a Double value in the named attribute against either another attribute in the same DataObject, or a literal double value.

Supported Properties are:

 PredPrefix.Name     = Integer
 PredPrefix.AttName  = attr-name    // double-value attribute being tested.
 PredPrefix.Operator = comparison operator  ==, !=, <=, >=, <, >.
 PredPrefix.Value    = {12.0}       // literal value in braces
                      | attr-name   // another attribute in the object.
 

Note that the attributes used need not be of type double; they are converted into strings then into doubles, so ints, longs, BigDecimals, strings containing numbers will work, but be careful of the possibility of rounding errors.
Note also that because of rounding errors, == and != are not always accurate; it is best to arrange your tests to use 'greater than' and 'less than' if possible.

Field Summary

(package private) static org.apache.log4j.Logger

log

Fields inherited from class org.openadaptor.adaptor.value.predicate.AbstractComparisonPredicate

ATTNAME_PROP, attrName, comparisonString, EQ, GE, GT, LE, LT, NE, operator, OPERATOR_PROP, predicateName, VALUE_PROP

Constructor Summary

DoublePredicate()

Method Summary

protected void	setValue(java.lang.String c)
protected boolean	test(java.lang.String atValue, DataObject dataObj) Override this method to check a specific attribute value Note the value to be tested has been converted from its native form into a String.

Methods inherited from class org.openadaptor.adaptor.value.predicate.AbstractComparisonPredicate

getOperator, getOperatorString, init, matches, setOperator, validateAttrName

Methods inherited from class java.lang.Object

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

Field Detail

log

static org.apache.log4j.Logger log

Constructor Detail

DoublePredicate

public DoublePredicate()

Method Detail

setValue

protected void setValue(java.lang.String c)
                 throws ValueException

Specified by:

setValue in class AbstractComparisonPredicate

Throws:

ValueException

test

protected boolean test(java.lang.String atValue,
                       DataObject dataObj)
                throws ValueException

Description copied from class: AbstractComparisonPredicate

Override this method to check a specific attribute value Note the value to be tested has been converted from its native form into a String.

Specified by:

test in class AbstractComparisonPredicate

Parameters:

atValue - Attribute value as a String.

dataObj -

Returns:

True if comparison value maps to a valid integer, and comparison is correct.

Throws:

ValueException