Package org.drools.compiler.lang.descr

Examples of org.drools.compiler.lang.descr.QueryDescr

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    @Test
    public void testQuery() throws Exception {
        final KnowledgeBuilderImpl builder = new KnowledgeBuilderImpl();

        final PackageDescr packageDescr = new PackageDescr( "p1" );
        final QueryDescr queryDescr = new QueryDescr( "query1" );
        queryDescr.addParameter( "String",
                                 "$type" );

        packageDescr.addRule( queryDescr );

        final AndDescr lhs = new AndDescr();
        queryDescr.setLhs( lhs );

        final PatternDescr pattern = new PatternDescr( Cheese.class.getName(),
                                                       "stilton" );
        lhs.addDescr( pattern );

        pattern.addConstraint( new ExprConstraintDescr("type == $type") );

        // Another query, no parameters
        QueryDescr queryDescr2 = new QueryDescr( "query2" );
        packageDescr.addRule( queryDescr2 );
        AndDescr lhs2 = new AndDescr();
        queryDescr2.setLhs( lhs2 );
        PatternDescr pattern2 = new PatternDescr( Cheese.class.getName() );
        lhs2.addDescr( pattern2 );

        builder.addPackage( packageDescr );
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                      types.get( 1 ) );

        assertEquals( "System.out.println(\"hello world\");",
                      functionDescr.getText().trim() );

        final QueryDescr queryDescr = (QueryDescr) packageDescr.getRules().get( 0 );
        assertEquals( "my query",
                      queryDescr.getName() );

        final AndDescr lhs = queryDescr.getLhs();
        assertEquals( 1,
                      lhs.getDescrs().size() );
        final PatternDescr patternDescr = (PatternDescr) lhs.getDescrs().get( 0 );
        assertEquals( "Foo",
                      patternDescr.getObjectType() );
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    public void testRuleWithQuery() throws Exception {
        final PackageBuilder builder = new PackageBuilder();

        final PackageDescr packageDescr = new PackageDescr( "p1" );

        QueryDescr queryDescr = new QueryDescr( "query1" );
        queryDescr.addParameter( "String",
                                 "$name" );
        queryDescr.addParameter( "int",
                                 "$age" );
        queryDescr.addParameter( "String",
                                 "$likes" );
        packageDescr.addRule( queryDescr );
        AndDescr lhs = new AndDescr();
        queryDescr.setLhs( lhs );
        PatternDescr pattern = new PatternDescr( Person.class.getName() );
        lhs.addDescr( pattern );
        pattern.addConstraint( new BindingDescr( "$name", "name", true ) );
        pattern.addConstraint( new BindingDescr( "$age", "age", true ) );
        pattern.addConstraint( new BindingDescr( "$likes", "likes", true ) );
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    @Test
    public void testQuery() throws Exception {
        final PackageBuilder builder = new PackageBuilder();

        final PackageDescr packageDescr = new PackageDescr( "p1" );
        final QueryDescr queryDescr = new QueryDescr( "query1" );
        queryDescr.addParameter( "String",
                                 "$type" );

        packageDescr.addRule( queryDescr );

        final AndDescr lhs = new AndDescr();
        queryDescr.setLhs( lhs );

        final PatternDescr pattern = new PatternDescr( Cheese.class.getName(),
                                                       "stilton" );
        lhs.addDescr( pattern );

        pattern.addConstraint( new ExprConstraintDescr("type == $type") );

        // Another query, no parameters
        QueryDescr queryDescr2 = new QueryDescr( "query2" );
        packageDescr.addRule( queryDescr2 );
        AndDescr lhs2 = new AndDescr();
        queryDescr2.setLhs( lhs2 );
        PatternDescr pattern2 = new PatternDescr( Cheese.class.getName() );
        lhs2.addDescr( pattern2 );

        builder.addPackage( packageDescr );
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                                    attrs );

        final String queryName = attrs.getValue( "name" );
        emptyAttributeCheck( localName, "name", queryName, parser );

        final QueryDescr queryDescr = new QueryDescr( queryName.trim() );

        return queryDescr;
    }
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    public Object end(final String uri,
                      final String localName,
                      final ExtensibleXmlParser parser) throws SAXException {
        final Element element = parser.endElementBuilder();

        final QueryDescr queryDescr = (QueryDescr) parser.getCurrent();

        final AndDescr lhs = queryDescr.getLhs();

        if ( lhs == null || lhs.getDescrs().isEmpty() ) {
            throw new SAXParseException( "<query> requires a LHS",
                                         parser.getLocator() );
        }
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public class QueryDescrBuilderImpl extends BaseDescrBuilderImpl<PackageDescrBuilder, QueryDescr>
    implements
    QueryDescrBuilder {

    protected QueryDescrBuilderImpl( PackageDescrBuilder parent ) {
        super( parent, new QueryDescr() );
    }
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Related Classes of org.drools.compiler.lang.descr.QueryDescr

  • org.drools.compiler.compiler.QueryBuilderTest
  • org.drools.compiler.compiler.xml.rules.QueryHandler
  • org.drools.compiler.compiler.xml.rules.XmlPackageReaderTest
  • org.drools.compiler.lang.api.impl.QueryDescrBuilderImpl
  • org.drools.compiler.lang.RuleParserTest
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