Package org.apache.commons.betwixt.expression

Examples of org.apache.commons.betwixt.expression.Expression

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            log.trace("Creating descriptor for property: name="
                + name + " type=" + type);
        }
       
        Descriptor descriptor = null;
        Expression propertyExpression = beanProperty.getPropertyExpression();
        Updater propertyUpdater = beanProperty.getPropertyUpdater();
       
        if ( propertyExpression == null ) {
            if (log.isTraceEnabled()) {
                log.trace( "No read method for property: name="
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            log.trace("Creating descriptor for property: name="
                + getPropertyName() + " type=" + getPropertyType());
        }
       
        NodeDescriptor descriptor = null;
        Expression propertyExpression = getPropertyExpression();
        Updater propertyUpdater = getPropertyUpdater();
       
        if ( propertyExpression == null ) {
            if (log.isTraceEnabled()) {
                log.trace( "No read method for property: name="
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            log.trace("Creating descriptor for property: name="
                + getPropertyName() + " type=" + getPropertyType());
        }
       
        NodeDescriptor descriptor = null;
        Expression propertyExpression = getPropertyExpression();
        Updater propertyUpdater = getPropertyUpdater();
       
        if ( propertyExpression == null ) {
            if (log.isTraceEnabled()) {
                log.trace( "No read method for property: name="
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            for ( int i = 0, size = childDescriptors.length; i < size; i++ ) {
                if (childDescriptors[i] instanceof ElementDescriptor) {
                    // Element content
                    ElementDescriptor childDescriptor = (ElementDescriptor) childDescriptors[i];
                    Context childContext = context;
                    Expression childExpression = childDescriptor.getContextExpression();
                    if ( childExpression != null ) {
                        Object childBean = childExpression.evaluate( context );
                        if ( childBean != null ) {
                            String qualifiedName = childDescriptor.getQualifiedName();
                            String namespaceUri = childDescriptor.getURI();
                            String localName = childDescriptor.getLocalName();
                            // XXXX: should we handle nulls better
                            if ( childBean instanceof Iterator ) {
                                for ( Iterator iter = (Iterator) childBean; iter.hasNext(); ) {
                                    Object object = iter.next();
                                    if (object == null) {
                                        continue;
                                    }
                                    writeBean(
                                            namespaceUri,
                                            localName,
                                            qualifiedName,
                                            object,
                                            context );
                                }
                            } else {
                                writeBean(
                                            namespaceUri,
                                            localName,
                                            qualifiedName,
                                            childBean,
                                            context );
                            }
                        }                   
                    } else {
                        writeElement(
                                    childDescriptor.getURI(),
                                    childDescriptor.getLocalName(),
                                    childDescriptor.getQualifiedName(),
                                    childDescriptor,
                                    childContext );
                    }
                } else {
                    // Mixed text content
                    // evaluate the body text
                    Expression expression = childDescriptors[i].getTextExpression();
                    if ( expression != null ) {
                        Object value = expression.evaluate( context );
                        String text = convertToString(
                                                        value,
                                                        childDescriptors[i],
                                                        context );
                        if ( text != null && text.length() > 0 ) {;
                            bodyText( writeContext, text );
                        }              
                    }
                }
            }
        } else {
            // evaluate the body text
            Expression expression = elementDescriptor.getTextExpression();
            if ( expression != null ) {
                Object value = expression.evaluate( context );
                String text = convertToString( value, elementDescriptor, context );
                if ( text != null && text.length() > 0 ) {
                    bodyText( writeContext, text );
                }
            }
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            log.trace( "Element has attributes." );
            return false;
        }
       
        // an element is not empty if it has a non-empty body
        Expression expression = descriptor.getTextExpression();
        if ( expression != null ) {
            Object value = expression.evaluate( context );
            String text = convertToString( value, descriptor, context );
            if ( text != null && text.length() > 0 ) {
                log.trace( "Element has body text which isn't empty." );
                return false;
            }
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    protected void writeAttribute(
                        AttributeDescriptor attributeDescriptor,
                        Context context )
                            throws
                                IOException, SAXException {
        Expression expression = attributeDescriptor.getTextExpression();
        if ( expression != null ) {
            Object value = expression.evaluate( context );
            if ( value != null ) {
                String text = value.toString();
                if ( text != null && text.length() > 0 ) {
                    expressAttribute(
                                    attributeDescriptor.getURI(),
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         * @return the attribute value or null if the index is out of range
         * @todo add value caching
         */
        public String getValue( int index ) {
            if ( indexInRange( index )) {
                Expression expression = attributes[index].getTextExpression();
                if ( expression != null ) {
                    Object value = expression.evaluate( context );
                    return convertToString( value, attributes[index], context );
                }
               
                return "";
            }
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    }

    private void installRelationshipMapper(BeanWriter beanWriter, Class aClass, String property, final String propertyPath) throws IntrospectionException {
        ElementDescriptor taskParentDescriptor = getElementDescriptor(
                beanWriter.getXMLIntrospector(), aClass, property);
        taskParentDescriptor.setContextExpression(new Expression() {
            public Object evaluate(Context context) {
                try {
                    return PropertyUtils.getProperty(context.getBean(), propertyPath);
                } catch (Exception e) {
                    throw new RuntimeException(e);
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                            }
                                                       
                        } else {
                            // use id from bean property
                            // it's up to the user to ensure uniqueness
                            Expression idExpression = idAttribute.getTextExpression();
                            if(idExpression == null) {
                                   throw new IntrospectionException(
                                         "The specified id property wasn't found in the bean ("
                                        + idAttribute + ").");
                            }
                            Object exp = idExpression.evaluate( context );
                            if (exp == null) {
                                // we'll use a random id
                                log.debug("Using random id");
                                id = idGenerator.nextId();
                               
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            for ( int i = 0, size = childDescriptors.length; i < size; i++ ) {
                if (childDescriptors[i] instanceof ElementDescriptor) {
                    // Element content
                    ElementDescriptor childDescriptor = (ElementDescriptor) childDescriptors[i];
                    Context childContext = context;
                    Expression childExpression = childDescriptor.getContextExpression();
                    if ( childExpression != null ) {
                        Object childBean = childExpression.evaluate( context );
                        if ( childBean != null ) {
                            String qualifiedName = childDescriptor.getQualifiedName();
                            String namespaceUri = childDescriptor.getURI();
                            String localName = childDescriptor.getLocalName();
                            // XXXX: should we handle nulls better
                            if ( childBean instanceof Iterator ) {
                                for ( Iterator iter = (Iterator) childBean; iter.hasNext(); ) {
                                    Object object = iter.next();
                                    if (object == null) {
                                        continue;
                                    }
                                    writeBean(
                                            namespaceUri,
                                            localName,
                                            qualifiedName,
                                            object,
                                            childDescriptor,
                                            context );
                                }
                            } else {
                                writeBean(
                                            namespaceUri,
                                            localName,
                                            qualifiedName,
                                            childBean,
                                            childDescriptor,
                                            context );
                            }
                        }                   
                    } else {
                        writeElement(
                                    childDescriptor.getURI(),
                                    childDescriptor.getLocalName(),
                                    childDescriptor.getQualifiedName(),
                                    childDescriptor,
                                    childContext );
                    }
                } else {
                    // Mixed text content
                    // evaluate the body text
                    Expression expression = childDescriptors[i].getTextExpression();
                    if ( expression != null ) {
                        Object value = expression.evaluate( context );
                        String text = convertToString(
                                                        value,
                                                        childDescriptors[i],
                                                        context );
                        if ( text != null && text.length() > 0 ) {;
                            bodyText( writeContext, text );
                        }              
                    }
                }
            }
        } else {
            // evaluate the body text
            Expression expression = elementDescriptor.getTextExpression();
            if ( expression != null ) {
                Object value = expression.evaluate( context );
                String text = convertToString( value, elementDescriptor, context );
                if ( text != null && text.length() > 0 ) {
                    bodyText( writeContext, text );
                }
            }
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Related Classes of org.apache.commons.betwixt.expression.Expression

  • org.apache.commons.betwixt.BeanProperty
  • org.apache.commons.betwixt.digester.ElementRule
  • org.apache.commons.betwixt.io.AbstractBeanWriter
  • org.apache.commons.betwixt.io.AbstractBeanWriter$ElementAttributes
  • org.apache.commons.betwixt.XMLIntrospector
  • org.nxplanner.export.XmlExporter
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