Source Code Cross Referenced for AbstractPropertyAccessor.java in  » J2EE » spring-framework-2.0.6 » org » springframework » beans » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » spring framework 2.0.6 » org.springframework.beans 
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;
018:
019:        import java.util.Arrays;
020:        import java.util.Iterator;
021:        import java.util.LinkedList;
022:        import java.util.List;
023:        import java.util.Map;
024:
025:        /**
026:         * Abstract implementation of the {@link PropertyAccessor} interface.
027:         * Provides base implementations of all convenience methods, with the
028:         * implementation of actual property access left to subclasses
029:         *
030:         * @author Juergen Hoeller
031:         * @since 2.0
032:         * @see #getPropertyValue
033:         * @see #setPropertyValue
034:         */
035:        public abstract class AbstractPropertyAccessor extends
036:                PropertyEditorRegistrySupport implements 
037:                ConfigurablePropertyAccessor {
038:
039:            private boolean extractOldValueForEditor = false;
040:
041:            public void setExtractOldValueForEditor(
042:                    boolean extractOldValueForEditor) {
043:                this .extractOldValueForEditor = extractOldValueForEditor;
044:            }
045:
046:            public boolean isExtractOldValueForEditor() {
047:                return extractOldValueForEditor;
048:            }
049:
050:            public void setPropertyValue(PropertyValue pv)
051:                    throws BeansException {
052:                setPropertyValue(pv.getName(), pv.getValue());
053:            }
054:
055:            public void setPropertyValues(Map map) throws BeansException {
056:                setPropertyValues(new MutablePropertyValues(map));
057:            }
058:
059:            public void setPropertyValues(PropertyValues pvs)
060:                    throws BeansException {
061:                setPropertyValues(pvs, false, false);
062:            }
063:
064:            public void setPropertyValues(PropertyValues pvs,
065:                    boolean ignoreUnknown) throws BeansException {
066:                setPropertyValues(pvs, ignoreUnknown, false);
067:            }
068:
069:            public void setPropertyValues(PropertyValues pvs,
070:                    boolean ignoreUnknown, boolean ignoreInvalid)
071:                    throws BeansException {
072:
073:                List propertyAccessExceptions = null;
074:                List propertyValues = (pvs instanceof  MutablePropertyValues ? ((MutablePropertyValues) pvs)
075:                        .getPropertyValueList()
076:                        : Arrays.asList(pvs.getPropertyValues()));
077:                for (Iterator it = propertyValues.iterator(); it.hasNext();) {
078:                    PropertyValue pv = (PropertyValue) it.next();
079:                    try {
080:                        // This method may throw any BeansException, which won't be caught
081:                        // here, if there is a critical failure such as no matching field.
082:                        // We can attempt to deal only with less serious exceptions.
083:                        setPropertyValue(pv);
084:                    } catch (NotWritablePropertyException ex) {
085:                        if (!ignoreUnknown) {
086:                            throw ex;
087:                        }
088:                        // Otherwise, just ignore it and continue...
089:                    } catch (NullValueInNestedPathException ex) {
090:                        if (!ignoreInvalid) {
091:                            throw ex;
092:                        }
093:                        // Otherwise, just ignore it and continue...
094:                    } catch (PropertyAccessException ex) {
095:                        if (propertyAccessExceptions == null) {
096:                            propertyAccessExceptions = new LinkedList();
097:                        }
098:                        propertyAccessExceptions.add(ex);
099:                    }
100:                }
101:
102:                // If we encountered individual exceptions, throw the composite exception.
103:                if (propertyAccessExceptions != null) {
104:                    PropertyAccessException[] paeArray = (PropertyAccessException[]) propertyAccessExceptions
105:                            .toArray(new PropertyAccessException[propertyAccessExceptions
106:                                    .size()]);
107:                    throw new PropertyBatchUpdateException(paeArray);
108:                }
109:            }
110:
111:            // Redefined with public visibility.
112:            public Class getPropertyType(String propertyPath) {
113:                return null;
114:            }
115:
116:            /**
117:             * Actually get the value of a property.
118:             * @param propertyName name of the property to get the value of
119:             * @return the value of the property
120:             * @throws InvalidPropertyException if there is no such property or
121:             * if the property isn't readable
122:             * @throws PropertyAccessException if the property was valid but the
123:             * accessor method failed
124:             */
125:            public abstract Object getPropertyValue(String propertyName)
126:                    throws BeansException;
127:
128:            /**
129:             * Actually set a property value.
130:             * @param propertyName name of the property to set value of
131:             * @param value the new value
132:             * @throws InvalidPropertyException if there is no such property or
133:             * if the property isn't writable
134:             * @throws PropertyAccessException if the property was valid but the
135:             * accessor method failed or a type mismatch occured
136:             */
137:            public abstract void setPropertyValue(String propertyName,
138:                    Object value) throws BeansException;
139:
140:        }
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