001 /*
002 * Copyright 2008-2017 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016 package org.codehaus.griffon.runtime.core.controller;
017
018 import griffon.core.controller.ActionMetadata;
019 import griffon.core.controller.ActionParameter;
020 import griffon.inject.Contextual;
021
022 import javax.annotation.Nonnull;
023 import javax.annotation.Nullable;
024 import javax.inject.Named;
025 import java.lang.annotation.Annotation;
026 import java.util.Arrays;
027
028 import static griffon.util.GriffonClassUtils.requireState;
029 import static griffon.util.GriffonNameUtils.isBlank;
030 import static java.lang.System.arraycopy;
031
032 /**
033 * @author Andres Almiray
034 * @since 2.11.0
035 */
036 public class DefaultActionParameter implements ActionParameter {
037 private static final Annotation[] EMPTY_ARRAY = new Annotation[0];
038
039 private final int index;
040 private final Class<?> type;
041 private final String name;
042 private final Annotation[] annotations;
043 private final boolean contextual;
044 private final boolean nullable;
045
046 public DefaultActionParameter(@Nonnull ActionMetadata actionMetadata, int index, @Nonnull Class<?> type, @Nullable Annotation[] annotations) {
047 requireState(index >= 0, "Parameter index must be equal or greater than 0 [" + index + "]");
048 this.index = index;
049 this.type = type;
050
051 if (annotations != null) {
052 this.annotations = new Annotation[annotations.length];
053 arraycopy(annotations, 0, this.annotations, 0, annotations.length);
054
055 boolean c = false;
056 boolean u = false;
057 String n = null;
058 for (Annotation annotation : this.annotations) {
059 if (Contextual.class.isAssignableFrom(annotation.annotationType())) {
060 c = true;
061 }
062 if (Nonnull.class.isAssignableFrom(annotation.annotationType())) {
063 u = true;
064 }
065 if (Named.class.isAssignableFrom(annotation.annotationType())) {
066 n = ((Named) annotation).value();
067 }
068 }
069 this.contextual = c;
070 this.nullable = !u;
071 this.name = !isBlank(n) ? n : resolveParameterName(actionMetadata, index);
072 } else {
073 this.annotations = EMPTY_ARRAY;
074 this.contextual = false;
075 this.nullable = false;
076 this.name = resolveParameterName(actionMetadata, index);
077 }
078 }
079
080 @Nonnull
081 protected String resolveParameterName(@Nonnull ActionMetadata actionMetadata, int index) {
082 return actionMetadata.getFullyQualifiedName() + ".arg" + index;
083 }
084
085 @Override
086 public int getIndex() {
087 return index;
088 }
089
090 @Nonnull
091 @Override
092 public Annotation[] getAnnotations() {
093 return annotations;
094 }
095
096 @Nonnull
097 @Override
098 public Class<?> getType() {
099 return type;
100 }
101
102 @Nonnull
103 @Override
104 public String getName() {
105 return name;
106 }
107
108 @Override
109 public boolean isContextual() {
110 return contextual;
111 }
112
113 @Override
114 public boolean isNullable() {
115 return nullable;
116 }
117
118 @Override
119 public String toString() {
120 final StringBuilder sb = new StringBuilder("DefaultActionParameter{");
121 sb.append("index=").append(index);
122 sb.append(", type=").append(type);
123 sb.append(", name=").append(name);
124 sb.append(", annotations=").append(Arrays.toString(annotations));
125 sb.append(", contextual=").append(contextual);
126 sb.append(", nullable=").append(nullable);
127 sb.append('}');
128 return sb.toString();
129 }
130 }
|