private void check(ITerm listOne, ITerm expectedResult) throws EvaluationException {
builtin = new DistinctValuesBuiltin(listOne);
ITuple arguments = BASIC.createTuple(X, Y, Z);
ITuple expectedTuple = BASIC.createTuple(expectedResult);
ITuple actualTuple = builtin.evaluate(arguments);
assertEquals(expectedTuple, actualTuple);
}
/**
* Represents a string substring operation, but restricts the endIndex to <code>string.length - 1
* </code>.
*
* @author gigi
* @author Adrian Marte
*/
public class StringSubstringUntilEndBuiltin extends FunctionalBuiltin {
private static final IPredicate PREDICATE = BASIC.createPredicate("STRING_SUBSTRING2", 3);
/**
* Constructor.
*
* @param terms The terms, where the first term is the string, the second term is the begin index
* and the third term represents the result.
* @throws IllegalArgumentException if one of the terms is {@code null}
*/
public StringSubstringUntilEndBuiltin(ITerm... terms) {
super(PREDICATE, terms);
}
protected ITerm computeResult(ITerm[] terms) throws EvaluationException {
if (terms[0] instanceof IStringTerm && terms[1] instanceof IIntegerTerm) {
IStringTerm string = (IStringTerm) terms[0];
IIntegerTerm beginIndex = (IIntegerTerm) terms[1];
String substring = string.getValue().substring(beginIndex.getValue().intValue());
return Factory.TERM.createString(substring);
}
return null;
}
}
/**
* Represents the RIF built-in func:contains as described in
* http://www.w3.org/TR/xpath-functions/#func-contains. Restricts the value of collation to Unicode
* code point collation (http://www.w3.org/2005/xpath-functions/collation/codepoint).
*/
public class StringContainsWithoutCollationBuiltin extends BooleanBuiltin {
private static final IPredicate PREDICATE = BASIC.createPredicate("STRING_CONTAINS2", 2);
/**
* Constructor.
*
* @param terms The terms, where the term at the first position is the <code>haystack</code> and
* the term at the second position is the <code>needle</code>. The <code>haystack</code> is
* the string being searched for the occurrence of the <code>needle</code>. The <code>needle
* </code> is the string to be searched for in the <code>haystack</code>.
* @throws IllegalArgumentException if one of the terms is {@code null}
*/
public StringContainsWithoutCollationBuiltin(ITerm... terms) {
super(PREDICATE, terms);
}
@Override
protected boolean computeResult(ITerm[] terms) {
String haystack = null;
String needle = null;
if (terms[0] instanceof IStringTerm && terms[1] instanceof StringTerm) {
haystack = ((IStringTerm) terms[0]).getValue();
needle = ((IStringTerm) terms[1]).getValue();
} else {
return false;
}
return StringContainsBuiltin.contains(haystack, needle, null);
}
}
ILiteral createLiteral(boolean positive, String predicateName, Object... termObjects) {
List<ITerm> terms = new ArrayList<ITerm>();
for (Object o : termObjects) {
if (o instanceof Integer) terms.add(CONCRETE.createInteger((Integer) o));
else if (o instanceof String) terms.add(TERM.createVariable((String) o));
}
if (predicateName.equals("="))
return BASIC.createLiteral(positive, new EqualBuiltin(terms.toArray(new ITerm[2])));
return BASIC.createLiteral(
positive,
BASIC.createAtom(
BASIC.createPredicate(predicateName, terms.size()), BASIC.createTuple(terms)));
}
/** Represents a string compare operation. */
public class StringCompareBuiltin extends FunctionalBuiltin {
/** The predicate defining this built-in. */
private static final IPredicate PREDICATE = BASIC.createPredicate("STRING_COMPARE", 3);
/**
* Constructor. Three terms must be passed to the constructor, otherwise an exception will be
* thrown.
*
* @param terms The terms.
* @throws IllegalArgumentException If one of the terms is {@code null}.
* @throws IllegalArgumentException If the number of terms submitted is not 3.
* @throws IllegalArgumentException If terms is <code>null</code>.
*/
public StringCompareBuiltin(ITerm... terms) {
super(PREDICATE, terms);
}
protected ITerm computeResult(ITerm[] terms) throws EvaluationException {
if (terms[0] instanceof IStringTerm && terms[1] instanceof IStringTerm) {
int result = BuiltinHelper.compare(terms[0], terms[1]);
return Factory.CONCRETE.createInteger(result);
}
return null;
}
}
private ITuple compute(ITerm term) throws EvaluationException {
ToDayTimeDurationBuiltin builtin = new ToDayTimeDurationBuiltin(term, Y);
ITuple arguments = BASIC.createTuple(X, Y);
ITuple actualTuple = builtin.evaluate(arguments);
return actualTuple;
}
IRule createRule(ILiteral head, ILiteral... body) {
List<ILiteral> h = new ArrayList<ILiteral>();
h.add(head);
List<ILiteral> b = new ArrayList<ILiteral>();
for (ILiteral l : body) b.add(l);
return BASIC.createRule(h, b);
}
/** Represents the RIF built-in predicate pred:date-less-than. */
public class DateLessBuiltin extends LessBuiltin {
/** The predicate defining this built-in. */
private static final IPredicate PREDICATE = BASIC.createPredicate("DATE_LESS", 2);
public DateLessBuiltin(ITerm... terms) {
super(PREDICATE, terms);
}
@Override
protected boolean computeResult(ITerm[] terms) {
if (terms[0] instanceof IDateTerm && terms[1] instanceof IDateTerm) {
return super.computeResult(terms);
}
return false;
}
}
/**
* Checks if a term is not of type 'Name'.
*
* @author Adrian Marte
*/
public class IsNotNameBuiltin extends BooleanBuiltin {
/** The predicate defining this built-in. */
public static final IPredicate PREDICATE = BASIC.createPredicate("IS_NOT_NAME", 1);
/**
* Constructor.
*
* @param terms The list of terms. Must always be of length 1 in this case.
*/
public IsNotNameBuiltin(ITerm... terms) {
super(PREDICATE, terms);
}
protected boolean computeResult(ITerm[] terms) {
return !IsNameBuiltin.isName(terms[0]);
}
}
/**
* Checks if a term is of type 'NegativeInteger'.
*
* @author Adrian Marte
*/
public class IsNegativeIntegerBuiltin extends BooleanBuiltin {
/** The predicate defining this built-in. */
public static final IPredicate PREDICATE = BASIC.createPredicate("IS_NEGATIVEINTEGER", 1);
/**
* Constructor.
*
* @param terms The list of terms. Must always be of length 1 in this case.
*/
public IsNegativeIntegerBuiltin(ITerm... terms) {
super(PREDICATE, terms);
}
protected boolean computeResult(ITerm[] terms) {
return isNegativeInteger(terms[0]);
}
public static boolean isNegativeInteger(ITerm term) {
return term instanceof INegativeInteger;
}
}
/**
* Represents a data type conversion function, which converts supported data type instances to
* String instances. According to the XPath casting table, all data types are supported to be
* converted to String.
*/
public class ToStringBuiltin extends ConversionBuiltin {
private static final IPredicate PREDICATE = BASIC.createPredicate("TO_STRING", 2);
/**
* Creates a new instance of this builtin.
*
* @param terms The term representing the data type instance to be converted.
*/
public ToStringBuiltin(ITerm... terms) {
super(PREDICATE, terms);
}
@Override
protected ITerm convert(ITerm term) {
if (term instanceof IConcreteTerm) {
return toString(term);
}
return null;
}
/**
* Converts a XMLLiteral term to a String term. The language tag of the XMLLiteral term is
* omitted.
*
* @param term The XMLLiteral term to be converted.
* @return A new String term representing the result of the conversion.
*/
public static IStringTerm toString(IXMLLiteral term) {
String string = term.getString();
return TERM.createString(string);
}
/**
* Converts a PlainLiteral term to a String term. The language tag of the PlainLiteral term is
* omitted.
*
* @param term The PlainLiteral term to be converted.
* @return A new String term representing the result of the conversion.
*/
public static IStringTerm toString(IPlainLiteral term) {
String string = term.getString();
return TERM.createString(string);
}
/**
* Converts a constant term to a String term. The <code>toCanonicalString</code> method of the
* given term is used to convert to String term.
*
* @param term The term to be converted.
* @return A new String term representing the result of the conversion, or <code>null</code> if
* the data type represented by the given term is not supported.
*/
public static IStringTerm toString(ITerm term) {
if (term instanceof IConcreteTerm) {
if (term instanceof IPlainLiteral) {
return toString((IPlainLiteral) term);
} else if (term instanceof IStringTerm) {
return (IStringTerm) term;
} else if (term instanceof IXMLLiteral) {
return toString((IXMLLiteral) term);
}
String string = ((IConcreteTerm) term).toCanonicalString();
return TERM.createString(string);
}
return null;
}
}
private void equals(IDayTimeDuration expected, ITerm term) throws EvaluationException {
ITuple expectedTuple = BASIC.createTuple(expected);
ITuple actualTuple = compute(term);
assertEquals(expectedTuple, actualTuple);
}
