Examples of ariba.util.fieldvalue.FieldPath

ariba.util.fieldvalue.FieldPath
The FieldPath class is an object representation of a dotted fieldPath. A String such as "foo.bar.baz" can be used to access a value on a target object using the FieldValue interface. Such a string might be the equivalent of the following Java code: target.getFoo().getBar().getBaz();. In order to avoid reparsing this string each time its used, the FieldPath object provides a way to store the parsed version of this string as a linked list of three nodes "foo"->"bar"->"baz".
In addition to avoiding the need to reparse the dotted fieldPath each time, we also use the FieldPath object as a place to store the previous FieldValueAccessor to which the node's fieldName resolved. Of course, the class for which the previousAccessor applies my not apply for the next usage, but in the common case it does, and so the performance of the dispatch operation is improved by avoiding a more costly hash lookup. Finally, the underlying Accessor (e.g. {@link ReflectionFieldAccessor} or{@link ReflectionMethodAccessor}) may itself cache a byte-code compiled accesor for the target, thereby turning field access into a no-lookup, no-reflection direct access.

    public void init (String bindingName, String fieldPathString)
    {
        // Becasue we cache fieldPaths, we don't use the shared pey paths
        // since we get better performance from the lookup skipping
        // built into FieldPath
        FieldPath fieldPath = new FieldPath(fieldPathString);
        this.init(bindingName, fieldPath);
    }

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    {
        this.init(bindingName);
        // Because we cache fieldPaths, we don't use the shared key paths
        // since we get better performance from the lookup skipping
        // built into FieldPath
        FieldPath fieldPath = new FieldPath(fieldPathString);
        _fieldPathString = fieldPathString.intern();
        _bindingKey = fieldPath.car().intern();
        _additionalKeyPath = fieldPath.cdr();
        _defaultBinding = defaultBinding;
    }

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        if (_primaryBindingFieldPath == DummyFieldPath) {
            _primaryBindingFieldPath = null;
            if (component.useLocalPool()) {
                Field bindingField = component.lookupBindingField(_bindingKey);
                if (bindingField != null) {
                    _primaryBindingFieldPath = new FieldPath(bindingField.getName());
                }
            }
        }
        AWBinding primaryBinding = null;
        if (_primaryBindingFieldPath == null) {

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    public void init (String bindingName, Class targetClass, String fieldPathString)
    {
        this.init(bindingName);
        _targetClass = targetClass;
        _fieldPath = new FieldPath(fieldPathString);
    }

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     * @param fieldPath - the fieldPath node which identifes the field to get.
     * @return the value obtained from the target using the fieldPath
     */
    public Object getFieldValuePrimitive (Object target, FieldPath fieldPath)
    {
        FieldPath newFieldPath = new FieldPath(fieldPath.fieldPathString());
        return newFieldPath.getFieldValue(target);
    }

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                    _foreignKey = key.substring(dot+1);
                } else {
                    _propKey = key;
                }


                _fieldPath = new FieldPath(_propKey);


                _metaContext.push();
                _metaContext.set(ObjectMeta.KeyField, _propKey);


                String type = (String)_metaContext.propertyForKey(ObjectMeta.KeyType);

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        AN doesn't have isProduction on their login page
    */
    public boolean isProduction ()
    {
        Object pageComponent = pageComponent();
        FieldPath fieldPath = new FieldPath("isProduction");
        try {
            Boolean isProduction = (Boolean)fieldPath.getFieldValue(pageComponent);
            return isProduction.booleanValue();
        }
        catch (RuntimeException exception) {
        }
        return true;

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    long _prevCRC = 0;


    public DetailDataSource (Object parent, String keyPath)
    {
        _parentObject = parent;
        _detailFieldPath = new FieldPath(keyPath);
    }

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        public Object getFieldValue (Object receiver, FieldPath fieldPath)
        {
            AWXmlContext xmlContext = (AWXmlContext)receiver;
            Object objectValue = FieldValue.getFieldValue(xmlContext._xmlNode, fieldPath.car());
            FieldPath remainingFieldPath = fieldPath.cdr();
            if (remainingFieldPath != null) {
                objectValue = remainingFieldPath.getFieldValue(objectValue);
            }
            objectValue = xmlContext.convertReturnValue(objectValue);
            return objectValue;
        }

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        }


        public Object getFieldValue (Object receiver, FieldPath fieldPath)
        {
            Object objectValue = getFieldValuePrimitive(receiver, fieldPath);
            FieldPath remainingFieldPath = fieldPath.cdr();
            if (remainingFieldPath != null) {
                remainingFieldPath.getFieldValue(objectValue);
            }
            return objectValue;
        }

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Related Classes of ariba.util.fieldvalue.FieldPath

ariba.ui.aribaweb.core.AWClassAccessorBinding

ariba.ui.aribaweb.core.AWConcreteXmlNode$AWConcreteXmlNodeFieldValueClassExtension

ariba.ui.aribaweb.core.AWKeyPathBinding

ariba.ui.aribaweb.core.AWParentKeyPathBinding

ariba.ui.aribaweb.core.AWXmlContext$AWXmlContextFieldValueClassExtension

ariba.ui.aribaweb.util.AWStringsFieldValueClassExtension

ariba.ui.meta.core.ObjectMeta$ObjectMetaContext

ariba.ui.meta.core.ObjectMeta$PropertyMap

ariba.ui.meta.persistence.DetailDataSource

ariba.ui.meta.persistence.Loader$Load$FieldProcessor

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