Package org.drools.compiler

Examples of org.drools.compiler.DescrBuildError

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        final Boolean[] notPatterns = new Boolean[declarations.length];
        for ( int i = 0, length = declarations.length; i < length; i++ ) {
            indexes[i] = new Integer( list.indexOf( declarations[i] ) );
            notPatterns[i] = (declarations[i].getExtractor() instanceof PatternExtractor) ? Boolean.FALSE : Boolean.TRUE ;
            if ( (indexes[i]).intValue() == -1 ) {
                context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                              ruleDescr,
                                                              null,
                                                              "Internal Error : Unable to find declaration in list while generating the consequence invoker" ) );
            }
        }
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        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;
        }
       
        if ( d.getEnd() <= 0 ) {
            // not correctly parse
            context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                          context.getRuleDescr(),
                                                          originalCode,
                                                          "Incorrect syntax for expression: " + d.getModifyExpression() + "\n" ) );

            return;
        }       
        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( "; " );
       
        // the following is a hack to preserve line breaks.
        String originalBlock = originalCode.substring( d.getStart() - 1,
                                                       d.getEnd() );
        int end = originalBlock.indexOf( "{" );
        if( end == -1 ){
            // no block
            context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                          context.getRuleDescr(),
                                                          null,
                                                          "Block missing after modify" + d.getModifyExpression() + " ?\n" ) );
            return;
        }       
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            ((MVELCompileable) accumulator).compile( context.getPackageBuilder().getRootClassLoader() );

            return accumulate;
        } catch ( Exception e ) {
            context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                          descr,
                                                          e,
                                                          "Unable to build expression for 'accumulate' : " + e.getMessage() ) );
            return null;
        }
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            data.addCompileable( context.getRule(),
                                 expr );
           
            expr.compile( data );
        } catch ( final Exception e ) {
            context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                          context.getRuleDescr(),
                                                          null,
                                                          "Unable to build expression for 'consequence': " + e.getMessage() + " '" + context.getRuleDescr().getConsequence() + "'" ) );
        }
    }
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                                                 availableIdentifiers,
                                                 localTypes,
                                                 "drools",
                                                 KnowledgeHelper.class );
        } catch ( final Exception e ) {
            context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                          descr,
                                                          null,
                                                          "Unable to determine the used declarations.\n" + e.getMessage() ) );
        } finally {
            // setting it back to original parent descr
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        } else if (ep.getType() == JavaBlockDescr.BlockType.ENTRY) {
            consequence.append("EntryPoint( ");
        } else if (ep.getType() == JavaBlockDescr.BlockType.CHANNEL) {
            consequence.append("Channel( ");
        } else {
            context.getErrors().add(new DescrBuildError(context.getParentDescr(),
                    context.getRuleDescr(),
                    ep,
                    "Unable to rewrite code block: " + ep + "\n"));

            return;
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                    Class<?> type = context.getDialect( "java" ).getPackageRegistry().getTypeResolver().resolveType( local.getType() );
                    for( IdentifierDescr id : local.getIdentifiers() ) {
                        localTypes.put( id.getIdentifier(), type );
                    }
                } catch ( ClassNotFoundException e ) {
                    context.getErrors().add( new DescrBuildError( context.getRuleDescr(),
                                                                  context.getParentDescr(),
                                                                  null,
                                                                  "Unable to resolve type " + local.getType() + ":\n" + e.getMessage() ) );
                }
            }
        }

           MVELAnalysisResult mvelAnalysis = ( MVELAnalysisResult ) mvel.analyzeBlock( context,
                                                                                       context.getRuleDescr(),
                                                                                       mvel.getInterceptors(),
                                                                                       d.getTargetExpression(),
                                                                                       bindings,
                                                                                       localTypes,
                                                                                       "drools",
                                                                                       KnowledgeHelper.class);
           context.setTypesafe( typeSafety );
           if ( mvelAnalysis == null ) {
               // something bad happened, issue already logged in errors
               return false;
           }

           Class ret = mvelAnalysis.getReturnType();

           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.getTargetExpression() + "\n" ) );

               return false;
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                                              Declaration declr,
                                              String obj) {
        int end = originalBlock.indexOf("{");
        if (end == -1) {
            // no block
            context.getErrors().add(new DescrBuildError(context.getParentDescr(),
                    context.getRuleDescr(),
                    null,
                    "Block missing after modify" + d.getTargetExpression() + " ?\n"));
            return false;
        }
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        JavaAnalysisResult result = null;
        try {
            result = this.analyzer.analyzeExpression( (String) content,
                                                      availableIdentifiers );
        } catch ( final Exception e ) {
            context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                          descr,
                                                          e,
                                                          "Unable to determine the used declarations.\n" + e ) );
        }
        return result;
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        JavaAnalysisResult result = null;
        try {
            result = this.analyzer.analyzeBlock( text,
                                                 availableIdentifiers );
        } catch ( final Exception e ) {
            context.getErrors().add( new DescrBuildError( context.getParentDescr(),
                                                          descr,
                                                          e,
                                                          "Unable to determine the used declarations.\n" + e ) );
        }
        return result;
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Related Classes of org.drools.compiler.DescrBuildError

  • org.drools.integrationtests.MiscTest
  • org.drools.rule.builder.ConstraintBuilder
  • org.drools.rule.builder.dialect.DialectUtil
  • org.drools.rule.builder.dialect.java.JavaAccumulateBuilder
  • org.drools.rule.builder.dialect.java.JavaConsequenceBuilder
  • org.drools.rule.builder.dialect.java.JavaDialect
  • org.drools.rule.builder.dialect.mvel.MVELAccumulateBuilder
  • org.drools.rule.builder.dialect.mvel.MVELActionBuilder
  • org.drools.rule.builder.dialect.mvel.MVELConsequenceBuilder
  • org.drools.rule.builder.dialect.mvel.MVELDialect
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