SimpleDynamicMethod.java revision 1551:f3b883bec2d0
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See the GNU General Public License 144Srgrimes * version 2 for more details (a copy is included in the LICENSE file that 154Srgrimes * accompanied this code). 164Srgrimes * 174Srgrimes * You should have received a copy of the GNU General Public License version 184Srgrimes * 2 along with this work; if not, write to the Free Software Foundation, 194Srgrimes * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 204Srgrimes * 214Srgrimes * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 224Srgrimes * or visit www.oracle.com if you need additional information or have any 234Srgrimes * questions. 244Srgrimes */ 254Srgrimes 264Srgrimes/* 274Srgrimes * This file is available under and governed by the GNU General Public 284Srgrimes * License version 2 only, as published by the Free Software Foundation. 294Srgrimes * However, the following notice accompanied the original version of this 304Srgrimes * file, and Oracle licenses the original version of this file under the BSD 314Srgrimes * license: 32619Srgrimes */ 3350477Speter/* 344Srgrimes Copyright 2009-2013 Attila Szegedi 354Srgrimes 3616363Sasami Licensed under both the Apache License, Version 2.0 (the "Apache License") 3716363Sasami and the BSD License (the "BSD License"), with licensee being free to 3816363Sasami choose either of the two at their discretion. 3916363Sasami 40720Swollman You may not use this file except in compliance with either the Apache 414474Sbde License or the BSD License. 42720Swollman 434682Sphk If you choose to use this file in compliance with the Apache License, the 449223Sbde following notice applies to you: 454Srgrimes 464Srgrimes You may obtain a copy of the Apache License at 474Srgrimes 484Srgrimes http://www.apache.org/licenses/LICENSE-2.0 494Srgrimes 504Srgrimes Unless required by applicable law or agreed to in writing, software 514Srgrimes distributed under the License is distributed on an "AS IS" BASIS, 529223Sbde WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or 534Srgrimes implied. See the License for the specific language governing 544Srgrimes permissions and limitations under the License. 554Srgrimes 569223Sbde If you choose to use this file in compliance with the BSD License, the 579223Sbde following notice applies to you: 589223Sbde 599223Sbde Redistribution and use in source and binary forms, with or without 609223Sbde modification, are permitted provided that the following conditions are 619223Sbde met: 629223Sbde * Redistributions of source code must retain the above copyright 639223Sbde notice, this list of conditions and the following disclaimer. 649223Sbde * Redistributions in binary form must reproduce the above copyright 659223Sbde notice, this list of conditions and the following disclaimer in the 669223Sbde documentation and/or other materials provided with the distribution. 679223Sbde * Neither the name of the copyright holder nor the names of 689223Sbde contributors may be used to endorse or promote products derived from 694Srgrimes this software without specific prior written permission. 704Srgrimes 719223Sbde THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 729223Sbde IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 73131643Simp TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 744Srgrimes PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDER 759223Sbde BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 7612366Sbde CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 774Srgrimes SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 784Srgrimes BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 794Srgrimes WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 809223Sbde OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 814Srgrimes ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 824Srgrimes*/ 834Srgrimes 844Srgrimespackage jdk.dynalink.beans; 8542332Syokota 8642332Syokotaimport java.lang.invoke.MethodHandle; 8712366Sbdeimport java.lang.invoke.MethodType; 884Srgrimesimport jdk.dynalink.CallSiteDescriptor; 894Srgrimes 9012366Sbde/** 914Srgrimes * A dynamic method bound to exactly one Java method or constructor that is not caller sensitive. Since its target is 924Srgrimes * not caller sensitive, this class pre-caches its method handle and always returns it from the call to 934Srgrimes * {@link #getTarget(CallSiteDescriptor)}. Can be used in general to represents dynamic methods bound to a single method handle, 944Srgrimes * even if that handle is not mapped to a Java method, i.e. as a wrapper around field getters/setters, array element 954Srgrimes * getters/setters, etc. 969223Sbde */ 979223Sbdeclass SimpleDynamicMethod extends SingleDynamicMethod { 984Srgrimes private final MethodHandle target; 9912366Sbde private final boolean constructor; 1004Srgrimes 1014Srgrimes /** 1024Srgrimes * Creates a new simple dynamic method, with a name constructed from the class name, method name, and handle 1034Srgrimes * signature. 1044Srgrimes * 1054Srgrimes * @param target the target method handle 1064Srgrimes * @param clazz the class declaring the method 1074Srgrimes * @param name the simple name of the method 10812366Sbde */ 1094Srgrimes SimpleDynamicMethod(final MethodHandle target, final Class<?> clazz, final String name) { 1104474Sbde this(target, clazz, name, false); 111 } 112 113 /** 114 * Creates a new simple dynamic method, with a name constructed from the class name, method name, and handle 115 * signature. 116 * 117 * @param target the target method handle 118 * @param clazz the class declaring the method 119 * @param name the simple name of the method 120 * @param constructor does this represent a constructor? 121 */ 122 SimpleDynamicMethod(final MethodHandle target, final Class<?> clazz, final String name, final boolean constructor) { 123 super(getName(target, clazz, name, constructor)); 124 this.target = target; 125 this.constructor = constructor; 126 } 127 128 private static String getName(final MethodHandle target, final Class<?> clazz, final String name, final boolean constructor) { 129 return getMethodNameWithSignature(target.type(), constructor ? name : getClassAndMethodName(clazz, name), !constructor); 130 } 131 132 @Override 133 boolean isVarArgs() { 134 return target.isVarargsCollector(); 135 } 136 137 @Override 138 MethodType getMethodType() { 139 return target.type(); 140 } 141 142 @Override 143 MethodHandle getTarget(final CallSiteDescriptor desc) { 144 return target; 145 } 146 147 @Override 148 boolean isConstructor() { 149 return constructor; 150 } 151} 152