Source Code Cross Referenced for URIEditor.java in  » J2EE » spring-framework-2.5 » org » springframework » beans » propertyeditors » 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.beans.propertyeditors 
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.beans.propertyeditors;
018:
019:        import java.beans.PropertyEditorSupport;
020:        import java.io.IOException;
021:        import java.net.URI;
022:        import java.net.URISyntaxException;
023:
024:        import org.springframework.core.io.ClassPathResource;
025:        import org.springframework.util.ClassUtils;
026:        import org.springframework.util.ResourceUtils;
027:        import org.springframework.util.StringUtils;
028:
029:        /**
030:         * Editor for <code>java.net.URI</code>, to directly populate a URI property
031:         * instead of using a String property as bridge.
032:         *
033:         * <p>Supports Spring-style URI notation: any fully qualified standard URI
034:         * ("file:", "http:", etc) and Spring's special "classpath:" pseudo-URL,
035:         * which will be resolved to a corresponding URI.
036:         *
037:         * <p>Note: A URI is more relaxed than a URL in that it does not require
038:         * a valid protocol to be specified. Any scheme within a valid URI syntax
039:         * is allowed, even without a matching protocol handler being registered.
040:         *
041:         * @author Juergen Hoeller
042:         * @since 2.0.2
043:         * @see java.net.URI
044:         * @see URLEditor
045:         */
046:        public class URIEditor extends PropertyEditorSupport {
047:
048:            private final ClassLoader classLoader;
049:
050:            /**
051:             * Create a new URIEditor, converting "classpath:" locations into
052:             * standard URIs (not trying to resolve them into physical resources).
053:             */
054:            public URIEditor() {
055:                this .classLoader = null;
056:            }
057:
058:            /**
059:             * Create a new URIEditor, using the given ClassLoader to resolve
060:             * "classpath:" locations into physical resource URLs.
061:             * @param classLoader the ClassLoader to use for resolving "classpath:" locations
062:             * (may be <code>null</code> to indicate the default ClassLoader)
063:             */
064:            public URIEditor(ClassLoader classLoader) {
065:                this .classLoader = (classLoader != null ? classLoader
066:                        : ClassUtils.getDefaultClassLoader());
067:            }
068:
069:            public void setAsText(String text) throws IllegalArgumentException {
070:                if (StringUtils.hasText(text)) {
071:                    String uri = text.trim();
072:                    if (this .classLoader != null
073:                            && uri
074:                                    .startsWith(ResourceUtils.CLASSPATH_URL_PREFIX)) {
075:                        ClassPathResource resource = new ClassPathResource(uri
076:                                .substring(ResourceUtils.CLASSPATH_URL_PREFIX
077:                                        .length()), this .classLoader);
078:                        try {
079:                            String url = resource.getURL().toString();
080:                            setValue(createURI(url));
081:                        } catch (IOException ex) {
082:                            throw new IllegalArgumentException(
083:                                    "Could not retrieve URI for " + resource
084:                                            + ": " + ex.getMessage());
085:                        } catch (URISyntaxException ex) {
086:                            throw new IllegalArgumentException(
087:                                    "Invalid URI syntax: " + ex);
088:                        }
089:                    } else {
090:                        try {
091:                            setValue(createURI(uri));
092:                        } catch (URISyntaxException ex) {
093:                            throw new IllegalArgumentException(
094:                                    "Invalid URI syntax: " + ex);
095:                        }
096:                    }
097:                } else {
098:                    setValue(null);
099:                }
100:            }
101:
102:            /**
103:             * Create a URI instance for the given (resolved) String value.
104:             * <p>The default implementation uses the <code>URI(String)</code>
105:             * constructor, replacing spaces with "%20" quotes first.
106:             * @param value the value to convert into a URI instance
107:             * @return the URI instance
108:             * @throws URISyntaxException if URI conversion failed
109:             */
110:            protected URI createURI(String value) throws URISyntaxException {
111:                return new URI(StringUtils.replace(value, " ", "%20"));
112:            }
113:
114:            public String getAsText() {
115:                URI value = (URI) getValue();
116:                return (value != null ? value.toString() : "");
117:            }
118:
119:        }
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