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// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
package jodd.madvoc.component;
import jodd.cache.TypeCache;
import jodd.introspector.ClassDescriptor;
import jodd.introspector.ClassIntrospector;
import jodd.introspector.PropertyDescriptor;
import jodd.madvoc.MadvocException;
import jodd.madvoc.config.InjectionPoint;
import jodd.madvoc.config.ScopeData;
import jodd.madvoc.meta.In;
import jodd.madvoc.meta.Out;
import jodd.madvoc.meta.Scope;
import jodd.madvoc.scope.MadvocScope;
import jodd.petite.meta.PetiteInject;
import jodd.util.StringUtil;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
/**
* Inspector for {@link ScopeData}. It works with types and method parameters.
*/
public class ScopeDataInspector {
@PetiteInject
protected ScopeResolver scopeResolver;
private final ScopeData NO_SCOPE_DATA;
public ScopeDataInspector() {
NO_SCOPE_DATA = new ScopeData(this, null, null);
}
// ---------------------------------------------------------------- detection
/**
* Scans annotation and returns type of Madvoc annotations.
*/
public Class detectAnnotationType(final Annotation[] annotations) {
for (final Annotation annotation : annotations) {
if (annotation instanceof In) {
return annotation.annotationType();
}
else if (annotation instanceof Out) {
return annotation.annotationType();
}
}
return null;
}
// ---------------------------------------------------------------- inspect method
/**
* Inspects {@link ScopeData} parameters for given method parameter information.
*/
public ScopeData inspectMethodParameterScopes(final String name, final Class type, final Annotation[] annotations) {
In in = null;
Out out = null;
for (final Annotation annotation : annotations) {
if (annotation instanceof In) {
in = (In) annotation;
} else if (annotation instanceof Out) {
out = (Out) annotation;
}
}
final Class scope = resolveScopeClassFromAnnotations(annotations);
int count = 0;
InjectionPoint[] ins = null;
InjectionPoint[] outs = null;
if (in != null) {
final InjectionPoint scopeDataIn = buildInjectionPoint(in.value(), name, type, scope);
if (scopeDataIn != null) {
count++;
ins = new InjectionPoint[]{scopeDataIn};
}
}
if (out != null) {
final InjectionPoint scopeDataOut = buildInjectionPoint(out.value(), name, type, scope);
if (scopeDataOut != null) {
count++;
outs = new InjectionPoint[]{scopeDataOut};
}
}
if (count == 0) {
return NO_SCOPE_DATA;
}
return new ScopeData(this, ins, outs);
}
protected Class resolveScopeClassFromAnnotations(final Annotation[] annotations) {
Class scope = null;
for (final Annotation annotation : annotations) {
if (annotation instanceof Scope) {
if (scope != null) {
throw new MadvocException("Scope already defined: " + scope);
}
scope = ((Scope) annotation).value();
} else {
Class annotationScope = null;
final Annotation[] annotationAnnotations = annotation.annotationType().getAnnotations();
for (final Annotation innerAnnotation : annotationAnnotations) {
if (innerAnnotation instanceof Scope) {
annotationScope = ((Scope) innerAnnotation).value();
}
}
if (annotationScope != null) {
if (scope == null) {
scope = annotationScope;
}
else {
throw new MadvocException("Scope already defined: " + scope);
}
}
}
}
return scope;
}
// ---------------------------------------------------------------- inspect class
/**
* Builds injection point.
*/
protected InjectionPoint buildInjectionPoint(
final String annotationValue,
final String propertyName,
final Class propertyType,
final Class scope) {
final String value = annotationValue.trim();
final String name, targetName;
if (StringUtil.isNotBlank(value)) {
name = value;
targetName = propertyName;
}
else {
name = propertyName;
targetName = null;
}
return new InjectionPoint(propertyType, name, targetName, scopeResolver.defaultOrScopeType(scope));
}
private TypeCache scopeDataTypeCache = TypeCache.createDefault();
/**
* Cached version of {@link #inspectClassScopes(Class)}. Use it in runtime when
* configuration is not known yet.
*/
public ScopeData inspectClassScopesWithCache(final Class actionClass) {
return scopeDataTypeCache.get(actionClass, () -> inspectClassScopes(actionClass));
}
/**
* Inspects {@link ScopeData} for given class. The results are not cached, so it should
* be used only dyring configuration-time.
* For cached version, use {@link #inspectClassScopesWithCache(Class)}.
*/
public ScopeData inspectClassScopes(final Class actionClass) {
ClassDescriptor cd = ClassIntrospector.get().lookup(actionClass);
PropertyDescriptor[] allProperties = cd.getAllPropertyDescriptors();
List listIn = new ArrayList<>(allProperties.length);
List listOut = new ArrayList<>(allProperties.length);
for (PropertyDescriptor pd : allProperties) {
// collect annotations
Class scope = null;
In in = null;
Out out = null;
if (pd.getFieldDescriptor() != null) {
Field field = pd.getFieldDescriptor().getField();
in = field.getAnnotation(In.class);
out = field.getAnnotation(Out.class);
scope = resolveScopeClassFromAnnotations(field.getAnnotations());
}
if (pd.getWriteMethodDescriptor() != null) {
Method method = pd.getWriteMethodDescriptor().getMethod();
if (in == null) {
in = method.getAnnotation(In.class);
}
if (out == null) {
out = method.getAnnotation(Out.class);
}
if (scope == null) {
scope = resolveScopeClassFromAnnotations(method.getAnnotations());
}
}
if (pd.getReadMethodDescriptor() != null) {
Method method = pd.getReadMethodDescriptor().getMethod();
if (in == null) {
in = method.getAnnotation(In.class);
}
if (out == null) {
out = method.getAnnotation(Out.class);
}
if (scope == null) {
scope = resolveScopeClassFromAnnotations(method.getAnnotations());
}
}
// inspect all
final InjectionPoint ii = in == null ? null : buildInjectionPoint(in.value(), pd.getName(), pd.getType(), scope);
if (ii != null) {
listIn.add(ii);
}
final InjectionPoint oi = out == null ? null : buildInjectionPoint(out.value(), pd.getName(), pd.getType(), scope);
if (oi != null) {
listOut.add(oi);
}
}
if ((listIn.isEmpty()) && (listOut.isEmpty())) {
return NO_SCOPE_DATA;
}
InjectionPoint[] in = null;
InjectionPoint[] out = null;
if (!listIn.isEmpty()) {
in = listIn.toArray(new InjectionPoint[0]);
}
if (!listOut.isEmpty()) {
out = listOut.toArray(new InjectionPoint[0]);
}
return new ScopeData(this, in, out);
}
}
