Package org.drools.lang.descr

Examples of org.drools.lang.descr.QueryDescr

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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<QueryDescr>
    implements
    QueryDescrBuilder {

    protected QueryDescrBuilderImpl() {
        super( new QueryDescr() );
    }
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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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        parser.compilation_unit();
        assertTrue( parser.hasErrors() );
    }

    public void testSimpleQuery() throws Exception {
        final QueryDescr query = parseResource( "simple_query.drl" ).query();

        assertNotNull( query );

        assertEquals( "simple_query",
                      query.getName() );

        final AndDescr lhs = query.getLhs();

        assertNotNull( lhs );

        assertEquals( 3,
                      lhs.getDescrs().size() );
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                      pack.getRules().size() ); //as queries are rules
        RuleDescr rule = (RuleDescr) pack.getRules().get( 0 );
        assertEquals( "bar",
                      rule.getName() );

        QueryDescr query = (QueryDescr) pack.getRules().get( 1 );
        assertEquals( "simple_query",
                      query.getName() );

        rule = (RuleDescr) pack.getRules().get( 2 );
        assertEquals( "bar2",
                      rule.getName() );

        query = (QueryDescr) pack.getRules().get( 3 );
        assertEquals( "simple_query2",
                      query.getName() );

        assertFalse( parser.hasErrors() );
    }
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        parser.compilation_unit();
        assertTrue( parser.hasErrors() );
    }

    public void testSimpleQuery() throws Exception {
        final QueryDescr query = parseResource( "simple_query.drl" ).query();

        assertNotNull( query );

        assertEquals( "simple_query",
                      query.getName() );

        final AndDescr lhs = query.getLhs();

        assertNotNull( lhs );

        assertEquals( 3,
                      lhs.getDescrs().size() );
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                      pack.getRules().size() ); //as queries are rules
        RuleDescr rule = (RuleDescr) pack.getRules().get( 0 );
        assertEquals( "bar",
                      rule.getName() );

        QueryDescr query = (QueryDescr) pack.getRules().get( 1 );
        assertEquals( "simple_query",
                      query.getName() );

        rule = (RuleDescr) pack.getRules().get( 2 );
        assertEquals( "bar2",
                      rule.getName() );

        query = (QueryDescr) pack.getRules().get( 3 );
        assertEquals( "simple_query2",
                      query.getName() );

        assertFalse( parser.hasErrors() );
    }
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    public void testQuery() throws Exception {
        final PackageBuilder builder = new PackageBuilder();

        final PackageDescr packageDescr = new PackageDescr( "p1" );
        final QueryDescr queryDescr = new QueryDescr( "query1" );
        queryDescr.setParameters( new String[]{"$type"} );
        queryDescr.setParameterTypes( new String[]{"String"} );

        packageDescr.addRule( queryDescr );

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

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

        final FieldConstraintDescr literalDescr = new FieldConstraintDescr( "type" );
        literalDescr.addRestriction( new VariableRestrictionDescr( "==",
                                                                   "$type" ) );

        pattern.addConstraint( literalDescr );

        queryDescr.setConsequence( "update(stilton);" );

        builder.addPackage( packageDescr );

        assertLength( 0,
                      builder.getErrors().getErrors() );
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    public void testQuery() throws Exception {
        final PackageBuilder builder = new PackageBuilder();

        final PackageDescr packageDescr = new PackageDescr( "p1" );
        final QueryDescr queryDescr = new QueryDescr( "query1" );
        queryDescr.setParameters( new String[]{"$type"} );
        queryDescr.setParameterTypes( new String[]{"String"} );

        packageDescr.addRule( queryDescr );

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

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

        final FieldConstraintDescr literalDescr = new FieldConstraintDescr( "type" );
        literalDescr.addRestriction( new VariableRestrictionDescr( "==",
                                                                   "$type" ) );

        pattern.addConstraint( literalDescr );

        queryDescr.setConsequence( "update(stilton);" );

        builder.addPackage( packageDescr );

        assertLength( 0,
                      builder.getErrors().getErrors() );
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Related Classes of org.drools.lang.descr.QueryDescr

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