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1
24 package org.riotfamily.common.beans.override;
25
26 import java.util.List  ;
27
28 import org.apache.commons.logging.Log;
29 import org.apache.commons.logging.LogFactory;
30 import org.springframework.beans.BeansException;
31 import org.springframework.beans.PropertyValue;
32 import org.springframework.beans.factory.config.BeanDefinition;
33 import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
34 import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
35 import org.springframework.beans.factory.config.ListFactoryBean;
36 import org.springframework.beans.factory.config.RuntimeBeanReference;
37 import org.springframework.beans.factory.config.TypedStringValue;
38 import org.springframework.beans.factory.support.ManagedList;
39 import org.springframework.util.Assert;
40
41
45 public class ListMergeProcessor implements BeanFactoryPostProcessor {
46
47 private static Log log = LogFactory.getLog(ListMergeProcessor.class);
48
49 private String ref;
50
51 private String property;
52
53 private List values;
54
55 private boolean append = false;
56
57 public void setRef(String ref) {
58 this.ref = ref;
59 }
60
61 public void setProperty(String property) {
62 this.property = property;
63 }
64
65 public void setValues(List values) {
66 this.values = values;
67 }
68
69 public void setAppend(boolean append) {
70 this.append = append;
71 }
72
73 public void postProcessBeanFactory(
74 ConfigurableListableBeanFactory beanFactory)
75 throws BeansException {
76
77 BeanDefinition bd = beanFactory.getBeanDefinition(ref);
78 if (property == null) {
79 Assert.state(ListFactoryBean.class.getName().equals(bd.getBeanClassName()),
80 "Bean [" + ref + "] must be a ListFactoryBean");
81
82 property = "sourceList";
83 }
84
85 log.info("Adding " + values.size() + " items to " + ref + "." + property);
86
87 PropertyValue pv = bd.getPropertyValues().getPropertyValue(property);
88 if (pv == null) {
89 ManagedList list = new ManagedList();
91 list.addAll(values);
92 bd.getPropertyValues().addPropertyValue(property, list);
93 }
94 else {
95 Object value = pv.getValue();
96 if (value instanceof RuntimeBeanReference) {
97 RuntimeBeanReference ref = (RuntimeBeanReference) value;
98 value = beanFactory.getBean(ref.getBeanName());
99 }
100 else if (value instanceof TypedStringValue) {
101 TypedStringValue tsv = (TypedStringValue) value;
102 ManagedList list = new ManagedList();
103 list.addAll(values);
104 list.add(tsv.getValue());
105 bd.getPropertyValues().addPropertyValue(property, list);
106 return;
107 }
108 Assert.isInstanceOf(List .class, value);
109 List list = (List ) value;
110 if (append) {
111 list.addAll(values);
112 }
113 else {
114 for (int i = values.size() - 1; i >= 0; i--) {
115 list.add(0, values.get(i));
116 }
117 }
118 }
119 }
120
121 }
122 |
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