Package org.drools.rule.builder.dialect.java.parser

Examples of org.drools.rule.builder.dialect.java.parser.JavaModifyBlockDescr

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        MVELDialect mvel = (MVELDialect) context.getDialect( "mvel" );

        TreeSet blocks = new TreeSet( new Comparator() {
            public int compare(Object o1,
                               Object o2) {
                JavaModifyBlockDescr d1 = (JavaModifyBlockDescr) o1;
                JavaModifyBlockDescr d2 = (JavaModifyBlockDescr) o2;
                return d1.getStart() - d2.getStart();
            }
        } );

        for ( Iterator it = analysis.getModifyBlocks().iterator(); it.hasNext(); ) {
            blocks.add( it.next() );
        }

        StringBuffer consequence = new StringBuffer();
        int lastAdded = 0;
        for ( Iterator it = blocks.iterator(); it.hasNext(); ) {
            JavaModifyBlockDescr d = (JavaModifyBlockDescr) it.next();
            // adding chunk
            consequence.append( originalCode.substring( lastAdded,
                                                        d.getStart() - 1 ) );
            lastAdded = d.getEnd();

            Dialect.AnalysisResult mvelAnalysis = mvel.analyzeBlock( context,
                                                                     context.getRuleDescr(),
                                                                     mvel.getInterceptors(),
                                                                     d.getModifyExpression(),
                                                                     null );

            final ExecutableStatement expr = (ExecutableStatement) mvel.compile( d.getModifyExpression(),
                                                                                 mvelAnalysis,
                                                                                 mvel.getInterceptors(),
                                                                                 null,
                                                                                 null,
                                                                                 context );

            Class ret = expr.getKnownEgressType();

            if ( ret == null ) {
                // not possible to evaluate expression return value
                context.getErrors().add( new RuleError( context.getRule(),
                                                        context.getRuleDescr(),
                                                        originalCode,
                                                        "Unable to determine the resulting type of the expression: " + d.getModifyExpression() + "\n" ) );

                return null;
            }

            // adding modify expression
            consequence.append( ret.getName() );
            consequence.append( " __obj__ = (" );
            consequence.append( ret.getName() );
            consequence.append( ") " );
            consequence.append( d.getModifyExpression() );
            consequence.append( ";\n" );
            // adding the modifyRetract call:
            consequence.append( "modifyRetract( __obj__ );\n" );

            // adding each of the expressions:
            for ( Iterator exprIt = d.getExpressions().iterator(); exprIt.hasNext(); ) {
                consequence.append( "__obj__." );
                consequence.append( exprIt.next() );
                consequence.append( ";\n" );
            }
            // adding the modifyInsert call:
View Full Code Here
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        MVELDialect mvel = (MVELDialect) context.getDialect( "mvel" );

        TreeSet blocks = new TreeSet( new Comparator() {
            public int compare(Object o1,
                               Object o2) {
                JavaModifyBlockDescr d1 = (JavaModifyBlockDescr) o1;
                JavaModifyBlockDescr d2 = (JavaModifyBlockDescr) o2;
                return d1.getStart() - d2.getStart();
            }
        } );

        for ( Iterator it = analysis.getModifyBlocks().iterator(); it.hasNext(); ) {
            blocks.add( it.next() );
        }

        StringBuffer consequence = new StringBuffer();
        int lastAdded = 0;
        for ( Iterator it = blocks.iterator(); it.hasNext(); ) {
            JavaModifyBlockDescr d = (JavaModifyBlockDescr) it.next();
            // adding chunk
            consequence.append( originalCode.substring( lastAdded,
                                                        d.getStart() - 1 ) );
            lastAdded = d.getEnd();

            Dialect.AnalysisResult mvelAnalysis = mvel.analyzeBlock( context,
                                                                     context.getRuleDescr(),
                                                                     mvel.getInterceptors(),
                                                                     d.getModifyExpression(),
                                                                     null );

            final ExecutableStatement expr = (ExecutableStatement) mvel.compile( d.getModifyExpression(),
                                                                                 mvelAnalysis,
                                                                                 mvel.getInterceptors(),
                                                                                 null,
                                                                                 null,
                                                                                 context );

            Class ret = expr.getKnownEgressType();

            if ( ret == null ) {
                // not possible to evaluate expression return value
                context.getErrors().add( new RuleError( context.getRule(),
                                                        context.getRuleDescr(),
                                                        originalCode,
                                                        "Unable to determine the resulting type of the expression: " + d.getModifyExpression() + "\n" ) );

                return null;
            }

            // adding modify expression
            consequence.append( "{\n" );
            consequence.append( ret.getName() );
            consequence.append( " __obj__ = (" );
            consequence.append( ret.getName() );
            consequence.append( ") " );
            consequence.append( d.getModifyExpression() );
            consequence.append( ";\n" );
            // adding the modifyRetract call:
            consequence.append( "modifyRetract( __obj__ );\n" );
           

            // adding each of the expressions:
            for ( Iterator exprIt = d.getExpressions().iterator(); exprIt.hasNext(); ) {
                consequence.append( "__obj__." );
                consequence.append( exprIt.next() );
                consequence.append( ";\n" );
            }
            // adding the modifyInsert call:
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        MVELDialect mvel = (MVELDialect) context.getDialect( "mvel" );

        TreeSet blocks = new TreeSet( new Comparator() {
            public int compare(Object o1,
                               Object o2) {
                JavaModifyBlockDescr d1 = (JavaModifyBlockDescr) o1;
                JavaModifyBlockDescr d2 = (JavaModifyBlockDescr) o2;
                return d1.getStart() - d2.getStart();
            }
        } );

        for ( Iterator it = analysis.getModifyBlocks().iterator(); it.hasNext(); ) {
            blocks.add( it.next() );
        }

        StringBuffer consequence = new StringBuffer();
        int lastAdded = 0;
        for ( Iterator it = blocks.iterator(); it.hasNext(); ) {
            JavaModifyBlockDescr d = (JavaModifyBlockDescr) it.next();
            // adding chunk
            consequence.append( originalCode.substring( lastAdded,
                                                        d.getStart() - 1 ) );
            lastAdded = d.getEnd();

            Dialect.AnalysisResult mvelAnalysis = mvel.analyzeBlock( context,
                                                                     context.getRuleDescr(),
                                                                     mvel.getInterceptors(),
                                                                     d.getModifyExpression(),
                                                                     new Set[]{context.getDeclarationResolver().getDeclarations(context.getRule()).keySet(), context.getPkg().getGlobals().keySet()},
                                                                     null );

            final ExecutableStatement expr = (ExecutableStatement) mvel.compile( d.getModifyExpression(),
                                                                                 mvelAnalysis,
                                                                                 mvel.getInterceptors(),
                                                                                 null,
                                                                                 null,
                                                                                 context );

            Class ret = expr.getKnownEgressType();
           
            if( ret == null ) {
                // not possible to evaluate expression return value
                context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                              context.getRuleDescr(),
                                                              originalCode,
                                                              "Unable to determine the resulting type of the expression: " + d.getModifyExpression()+"\n" ) );
               
                return null;
            }
            String retString = ClassUtils.canonicalName( ret );

            // adding modify expression
            consequence.append( "{ " );
            consequence.append( retString );
            consequence.append( " __obj__ = (" );
            consequence.append( retString );
            consequence.append( ") " );
            consequence.append( d.getModifyExpression() );
            consequence.append( "; " );
            // adding the modifyRetract call:
            consequence.append( "modifyRetract( __obj__ ); " );

            // the following is a hack to preserve line breaks.
            String originalBlock = originalCode.substring( d.getStart()-1,
                                                           d.getEnd() );
            int end = originalBlock.indexOf( "{" );
            addLineBreaks( consequence,
                           originalBlock.substring( 0,
                                                    end ) );

            int start = end+1;
            // adding each of the expressions:
            for ( Iterator exprIt = d.getExpressions().iterator(); exprIt.hasNext(); ) {
                String exprStr = (String) exprIt.next();
                end = originalBlock.indexOf( exprStr,
                                             start );
                addLineBreaks( consequence,
                               originalBlock.substring( start,
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        MVELDialect mvel = (MVELDialect) context.getDialect( "mvel" );

        TreeSet blocks = new TreeSet( new Comparator() {
            public int compare(Object o1,
                               Object o2) {
                JavaModifyBlockDescr d1 = (JavaModifyBlockDescr) o1;
                JavaModifyBlockDescr d2 = (JavaModifyBlockDescr) o2;
                return d1.getStart() - d2.getStart();
            }
        } );

        for ( Iterator it = analysis.getModifyBlocks().iterator(); it.hasNext(); ) {
            blocks.add( it.next() );
        }

        StringBuffer consequence = new StringBuffer();
        int lastAdded = 0;
        for ( Iterator it = blocks.iterator(); it.hasNext(); ) {
            JavaModifyBlockDescr d = (JavaModifyBlockDescr) it.next();
            // adding chunk
            consequence.append( originalCode.substring( lastAdded,
                                                        d.getStart() - 1 ) );
            lastAdded = d.getEnd();

            Dialect.AnalysisResult mvelAnalysis = mvel.analyzeBlock( context,
                                                                     context.getRuleDescr(),
                                                                     mvel.getInterceptors(),
                                                                     d.getModifyExpression(),
                                                                     null );

            final ExecutableStatement expr = (ExecutableStatement) mvel.compile( d.getModifyExpression(),
                                                                                 mvelAnalysis,
                                                                                 mvel.getInterceptors(),
                                                                                 null,
                                                                                 null,
                                                                                 context );

            Class ret = expr.getKnownEgressType();

            if ( ret == null ) {
                // not possible to evaluate expression return value
                context.getErrors().add( new RuleError( context.getRule(),
                                                        context.getRuleDescr(),
                                                        originalCode,
                                                        "Unable to determine the resulting type of the expression: " + d.getModifyExpression() + "\n" ) );

                return null;
            }
            String retString = ClassUtils.canonicalName( ret );

            // adding modify expression
            consequence.append( "{ " );
            consequence.append( retString );
            consequence.append( " __obj__ = (" );
            consequence.append( retString );
            consequence.append( ") " );
            consequence.append( d.getModifyExpression() );
            consequence.append( "; " );
            // adding the modifyRetract call:
            consequence.append( "modifyRetract( __obj__ ); " );

            // the following is a hack to preserve line breaks.
            String originalBlock = originalCode.substring( d.getStart()-1,
                                                           d.getEnd() );
            int end = originalBlock.indexOf( "{" );
            addLineBreaks( consequence,
                           originalBlock.substring( 0,
                                                    end ) );

            int start = end+1;
            // adding each of the expressions:
            for ( Iterator exprIt = d.getExpressions().iterator(); exprIt.hasNext(); ) {
                String exprStr = (String) exprIt.next();
                end = originalBlock.indexOf( exprStr,
                                             start );
                addLineBreaks( consequence,
                               originalBlock.substring( start,
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Related Classes of org.drools.rule.builder.dialect.java.parser.JavaModifyBlockDescr

  • org.drools.rule.builder.dialect.java.JavaConsequenceBuilder
  • java.util.ArrayList
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