Examples with MetaProperty groovy.lang.MetaProperty used on opensource projects

Example 6 with MetaProperty

use of groovy.lang.MetaProperty in project groovy-core by groovy.

the class MethodRankHelper method getPropertySuggestionString.

/**
     * Returns a string detailing possible solutions to a missing field or property
     * if no good solutions can be found a empty string is returned.
     *
     * @param fieldName the missing field
     * @param type the class on which the field is sought
     * @return a string with probable solutions to the exception
     */
public static String getPropertySuggestionString(String fieldName, Class type) {
    ClassInfo ci = ClassInfo.getClassInfo(type);
    List<MetaProperty> fi = ci.getMetaClass().getProperties();
    List<RankableField> rf = new ArrayList<RankableField>(fi.size());
    StringBuilder sb = new StringBuilder();
    sb.append("\nPossible solutions: ");
    for (MetaProperty mp : fi) rf.add(new RankableField(fieldName, mp));
    Collections.sort(rf);
    int i = 0;
    for (RankableField f : rf) {
        if (i > MAX_RECOMENDATIONS)
            break;
        if (f.score > MAX_FIELD_SCORE)
            break;
        if (i > 0)
            sb.append(", ");
        sb.append(f.f.getName());
        i++;
    }
    return i > 0 ? sb.toString() : "";
}

Example 7 with MetaProperty

use of groovy.lang.MetaProperty in project groovy-core by groovy.

the class ObjectGraphBuilder method resolveLazyReferences.

private void resolveLazyReferences() {
    if (!lazyReferencesAllowed)
        return;
    for (NodeReference ref : lazyReferences) {
        if (ref.parent == null)
            continue;
        Object child = null;
        try {
            child = getProperty(ref.refId);
        } catch (MissingPropertyException mpe) {
        // ignore
        }
        if (child == null) {
            throw new IllegalArgumentException("There is no valid node for reference " + ref.parentName + "." + ref.childName + "=" + ref.refId);
        }
        // set child first
        childPropertySetter.setChild(ref.parent, child, ref.parentName, relationNameResolver.resolveChildRelationName(ref.parentName, ref.parent, ref.childName, child));
        // set parent afterwards
        String propertyName = relationNameResolver.resolveParentRelationName(ref.parentName, ref.parent, ref.childName, child);
        MetaProperty metaProperty = InvokerHelper.getMetaClass(child).hasProperty(child, propertyName);
        if (metaProperty != null) {
            metaProperty.setProperty(child, ref.parent);
        }
    }
}

Example 8 with MetaProperty

use of groovy.lang.MetaProperty in project grails-core by grails.

the class GrailsMetaClassUtils method getPropertyIfExists.

/**
     * Obtains a property of an instance if it exists
     *
     * @param instance The instance
     * @param property The property
     * @param requiredType The required type of the property
     * @return The property value
     */
@SuppressWarnings("unchecked")
public static <T> T getPropertyIfExists(Object instance, String property, Class<T> requiredType) {
    MetaClass metaClass = getMetaClass(instance);
    MetaProperty metaProperty = metaClass.getMetaProperty(property);
    if (metaProperty != null) {
        Object value = metaProperty.getProperty(instance);
        if (value != null && requiredType.isInstance(value)) {
            return (T) value;
        }
    }
    return null;
}

Example 9 with MetaProperty

use of groovy.lang.MetaProperty in project groovy-core by groovy.

the class MixinInMetaClass method mixinClassesToMetaClass.

public static void mixinClassesToMetaClass(MetaClass self, List<Class> categoryClasses) {
    final Class selfClass = self.getTheClass();
    if (self instanceof HandleMetaClass) {
        self = (MetaClass) ((HandleMetaClass) self).replaceDelegate();
    }
    if (!(self instanceof ExpandoMetaClass)) {
        if (self instanceof DelegatingMetaClass && ((DelegatingMetaClass) self).getAdaptee() instanceof ExpandoMetaClass) {
            self = ((DelegatingMetaClass) self).getAdaptee();
        } else {
            throw new GroovyRuntimeException("Can't mixin methods to meta class: " + self);
        }
    }
    ExpandoMetaClass mc = (ExpandoMetaClass) self;
    List<MetaMethod> arr = new ArrayList<MetaMethod>();
    for (Class categoryClass : categoryClasses) {
        final CachedClass cachedCategoryClass = ReflectionCache.getCachedClass(categoryClass);
        final MixinInMetaClass mixin = new MixinInMetaClass(mc, cachedCategoryClass);
        final MetaClass metaClass = GroovySystem.getMetaClassRegistry().getMetaClass(categoryClass);
        final List<MetaProperty> propList = metaClass.getProperties();
        for (MetaProperty prop : propList) if (self.getMetaProperty(prop.getName()) == null) {
            mc.registerBeanProperty(prop.getName(), new MixinInstanceMetaProperty(prop, mixin));
        }
        for (MetaProperty prop : cachedCategoryClass.getFields()) if (self.getMetaProperty(prop.getName()) == null) {
            mc.registerBeanProperty(prop.getName(), new MixinInstanceMetaProperty(prop, mixin));
        }
        for (MetaMethod method : metaClass.getMethods()) {
            final int mod = method.getModifiers();
            if (!Modifier.isPublic(mod))
                continue;
            if (method instanceof CachedMethod && ((CachedMethod) method).getCachedMethod().isSynthetic())
                continue;
            if (Modifier.isStatic(mod)) {
                if (method instanceof CachedMethod)
                    staticMethod(self, arr, (CachedMethod) method);
            } else if (method.getDeclaringClass().getTheClass() != Object.class || method.getName().equals("toString")) {
                //                    if (self.pickMethod(method.getName(), method.getNativeParameterTypes()) == null) {
                final MixinInstanceMetaMethod metaMethod = new MixinInstanceMetaMethod(method, mixin);
                arr.add(metaMethod);
            //                    }
            }
        }
    }
    for (Object res : arr) {
        final MetaMethod metaMethod = (MetaMethod) res;
        if (metaMethod.getDeclaringClass().isAssignableFrom(selfClass))
            mc.registerInstanceMethod(metaMethod);
        else {
            mc.registerSubclassInstanceMethod(metaMethod);
        }
    }
}

Example 10 with MetaProperty

use of groovy.lang.MetaProperty in project groovy by apache.

the class MixinInMetaClass method mixinClassesToMetaClass.

public static void mixinClassesToMetaClass(MetaClass self, List<Class> categoryClasses) {
    final Class selfClass = self.getTheClass();
    if (self instanceof HandleMetaClass) {
        self = (MetaClass) ((HandleMetaClass) self).replaceDelegate();
    }
    if (!(self instanceof ExpandoMetaClass)) {
        if (self instanceof DelegatingMetaClass && ((DelegatingMetaClass) self).getAdaptee() instanceof ExpandoMetaClass) {
            self = ((DelegatingMetaClass) self).getAdaptee();
        } else {
            throw new GroovyRuntimeException("Can't mixin methods to meta class: " + self);
        }
    }
    ExpandoMetaClass mc = (ExpandoMetaClass) self;
    List<MetaMethod> arr = new ArrayList<MetaMethod>();
    for (Class categoryClass : categoryClasses) {
        final CachedClass cachedCategoryClass = ReflectionCache.getCachedClass(categoryClass);
        final MixinInMetaClass mixin = new MixinInMetaClass(mc, cachedCategoryClass);
        final MetaClass metaClass = GroovySystem.getMetaClassRegistry().getMetaClass(categoryClass);
        final List<MetaProperty> propList = metaClass.getProperties();
        for (MetaProperty prop : propList) if (self.getMetaProperty(prop.getName()) == null) {
            mc.registerBeanProperty(prop.getName(), new MixinInstanceMetaProperty(prop, mixin));
        }
        for (MetaProperty prop : cachedCategoryClass.getFields()) if (self.getMetaProperty(prop.getName()) == null) {
            mc.registerBeanProperty(prop.getName(), new MixinInstanceMetaProperty(prop, mixin));
        }
        for (MetaMethod method : metaClass.getMethods()) {
            final int mod = method.getModifiers();
            if (!Modifier.isPublic(mod))
                continue;
            if (method instanceof CachedMethod && ((CachedMethod) method).getCachedMethod().isSynthetic())
                continue;
            if (Modifier.isStatic(mod)) {
                if (method instanceof CachedMethod)
                    staticMethod(self, arr, (CachedMethod) method);
            } else if (method.getDeclaringClass().getTheClass() != Object.class || method.getName().equals("toString")) {
                //                    if (self.pickMethod(method.getName(), method.getNativeParameterTypes()) == null) {
                final MixinInstanceMetaMethod metaMethod = new MixinInstanceMetaMethod(method, mixin);
                arr.add(metaMethod);
            //                    }
            }
        }
    }
    for (Object res : arr) {
        final MetaMethod metaMethod = (MetaMethod) res;
        if (metaMethod.getDeclaringClass().isAssignableFrom(selfClass))
            mc.registerInstanceMethod(metaMethod);
        else {
            mc.registerSubclassInstanceMethod(metaMethod);
        }
    }
}