Source Code Cross Referenced for ProxyConfig.java in  » J2EE » spring-framework-2.5 » org » springframework » aop » framework » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » spring framework 2.5 » org.springframework.aop.framework 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2002-2007 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:
017:        package org.springframework.aop.framework;
018:
019:        import java.io.Serializable;
020:
021:        import org.springframework.util.Assert;
022:
023:        /**
024:         * Convenience superclass for configuration used in creating proxies,
025:         * to ensure that all proxy creators have consistent properties.
026:         *
027:         * @author Rod Johnson
028:         * @author Juergen Hoeller
029:         * @see AdvisedSupport
030:         */
031:        public class ProxyConfig implements  Serializable {
032:
033:            /** use serialVersionUID from Spring 1.2 for interoperability */
034:            private static final long serialVersionUID = -8409359707199703185L;
035:
036:            private boolean proxyTargetClass = false;
037:
038:            private boolean optimize = false;
039:
040:            boolean opaque = false;
041:
042:            boolean exposeProxy = false;
043:
044:            private boolean frozen = false;
045:
046:            /**
047:             * Set whether to proxy the target class directly, instead of just proxying
048:             * specific interfaces. Default is "false".
049:             * <p>Set this to "true" to force proxying for the TargetSource's exposed
050:             * target class. If that target class is an interface, a JDK proxy will be
051:             * created for the given interface. If that target class is any other class,
052:             * a CGLIB proxy will be created for the given class.
053:             * <p>Note: Depending on the configuration of the concrete proxy factory,
054:             * the proxy-target-class behavior will also be applied if no interfaces
055:             * have been specified (and no interface autodetection is activated).
056:             * @see org.springframework.aop.TargetSource#getTargetClass()
057:             */
058:            public void setProxyTargetClass(boolean proxyTargetClass) {
059:                this .proxyTargetClass = proxyTargetClass;
060:            }
061:
062:            /**
063:             * Return whether to proxy the target class directly as well as any interfaces.
064:             */
065:            public boolean isProxyTargetClass() {
066:                return this .proxyTargetClass;
067:            }
068:
069:            /**
070:             * Set whether proxies should perform aggressive optimizations.
071:             * The exact meaning of "aggressive optimizations" will differ
072:             * between proxies, but there is usually some tradeoff.
073:             * Default is "false".
074:             * <p>For example, optimization will usually mean that advice changes won't
075:             * take effect after a proxy has been created. For this reason, optimization
076:             * is disabled by default. An optimize value of "true" may be ignored
077:             * if other settings preclude optimization: for example, if "exposeProxy"
078:             * is set to "true" and that's not compatible with the optimization.
079:             */
080:            public void setOptimize(boolean optimize) {
081:                this .optimize = optimize;
082:            }
083:
084:            /**
085:             * Return whether proxies should perform aggressive optimizations.
086:             */
087:            public boolean isOptimize() {
088:                return this .optimize;
089:            }
090:
091:            /**
092:             * Set whether proxies created by this configuration should be prevented
093:             * from being cast to {@link Advised} to query proxy status.
094:             * <p>Default is "false", meaning that any AOP proxy can be cast to
095:             * {@link Advised}.
096:             */
097:            public void setOpaque(boolean opaque) {
098:                this .opaque = opaque;
099:            }
100:
101:            /**
102:             * Return whether proxies created by this configuration should be
103:             * prevented from being cast to {@link Advised}.
104:             */
105:            public boolean isOpaque() {
106:                return this .opaque;
107:            }
108:
109:            /**
110:             * Set whether the proxy should be exposed by the AOP framework as a
111:             * ThreadLocal for retrieval via the AopContext class. This is useful
112:             * if an advised object needs to call another advised method on itself.
113:             * (If it uses <code>this</code>, the invocation will not be advised).
114:             * <p>Default is "false", for optimal performance.
115:             */
116:            public void setExposeProxy(boolean exposeProxy) {
117:                this .exposeProxy = exposeProxy;
118:            }
119:
120:            /**
121:             * Return whether the AOP proxy will expose the AOP proxy for
122:             * each invocation.
123:             */
124:            public boolean isExposeProxy() {
125:                return this .exposeProxy;
126:            }
127:
128:            /**
129:             * Set whether this config should be frozen.
130:             * <p>When a config is frozen, no advice changes can be made. This is
131:             * useful for optimization, and useful when we don't want callers to
132:             * be able to manipulate configuration after casting to Advised.
133:             */
134:            public void setFrozen(boolean frozen) {
135:                this .frozen = frozen;
136:            }
137:
138:            /**
139:             * Return whether the config is frozen, and no advice changes can be made.
140:             */
141:            public boolean isFrozen() {
142:                return this .frozen;
143:            }
144:
145:            /**
146:             * Copy configuration from the other config object.
147:             * @param other object to copy configuration from
148:             */
149:            public void copyFrom(ProxyConfig other) {
150:                Assert.notNull(other,
151:                        "Other ProxyConfig object must not be null");
152:                this .proxyTargetClass = other.proxyTargetClass;
153:                this .optimize = other.optimize;
154:                this .exposeProxy = other.exposeProxy;
155:                this .frozen = other.frozen;
156:                this .opaque = other.opaque;
157:            }
158:
159:            public String toString() {
160:                StringBuffer sb = new StringBuffer();
161:                sb.append("proxyTargetClass=").append(this .proxyTargetClass)
162:                        .append("; ");
163:                sb.append("optimize=").append(this .optimize).append("; ");
164:                sb.append("opaque=").append(this .opaque).append("; ");
165:                sb.append("exposeProxy=").append(this .exposeProxy).append("; ");
166:                sb.append("frozen=").append(this.frozen);
167:                return sb.toString();
168:            }
169:
170:        }
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