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1
19
20 package org.netbeans.api.java.comparators;
21
22 import java.util.Comparator  ;
23 import java.util.HashMap ;
24 import java.lang.reflect.Method ;
25 import org.openide.src.*;
26
27 public abstract class JavaElementComparator implements Comparator {
28
29 protected int type;
30 private static HashMap element2comparator;
31
32
33 public static final int SOURCE = 1;
34 public static final int RETURN_TYPE = 2;
35 public static final int NAME = 4;
36 public static final int PARAMETERS = 8;
37 public static final int EXCEPTIONS = 16;
38 public static final int TYPE = 32;
39 public static final int MODIFIERS = 64;
40 public static final int ISCLASS = 128;
41 public static final int PARAM_NAME = 256;
42 public static final int PARAM_MODIFIERS = 512;
43 public static final int PARAM_TYPE = 1024;
44
45 protected JavaElementComparator(int t) {
46 type=t;
47 }
48
49 protected int getType() {
50 return type;
51 }
52
53 public abstract int compare(Object o1, Object o2);
54
55 public boolean equals(Object ob) {
56 return getClass().isInstance(ob) && type==((JavaElementComparator)ob).getType();
57 }
58
59 public static Comparator createIdentifierComparator(boolean source) {
60 return IdentifierComparator.createComparator(source?SOURCE:0);
61 }
62
63 public static Comparator createTypeComparator(boolean source) {
64 return TypeComparator.createComparator(source?SOURCE:0);
65 }
66
67 public static Comparator createClassComparator(boolean source, int ordering[]) {
68 return createComparator(ClassElement.class,source,ordering);
69 }
70
71 public static Comparator createConstructorComparator(boolean source, int ordering[]) {
72 return createComparator(ConstructorElement.class,source,ordering);
73 }
74
75 public static Comparator createFiledComparator(boolean source, int ordering[]) {
76 return createComparator(FieldElement.class,source,ordering);
77 }
78
79 public static Comparator createMParameterComparator(boolean source, int ordering[]) {
80 return createComparator(MethodParameter.class,source,ordering);
81 }
82
83 public static Comparator createMethodComparator(boolean source, int ordering[]) {
84 return createComparator(MethodElement.class,source,ordering);
85 }
86
87 public static Comparator createComparator(Object element,boolean source, int ordering[]) {
88 return createComparator(element.getClass(),source,ordering);
89 }
90
91 public static Comparator createComparator(Class elementClass, boolean source, int ordering[]) {
92 int i;
93 int sourceType=source?SOURCE:0;
94 Method createCompMethod;
95 Comparator comparators[] = new Comparator [ordering.length];
96
97 if (element2comparator==null) {
98 synchronized (JavaElementComparator.class) {
99 if (element2comparator == null)
100 createElementMap();
101 }
102 }
103 createCompMethod=(Method )element2comparator.get(elementClass);
104 if (createCompMethod==null)
105 return null; if (ordering==null || ordering.length==0) {
107 try {
108 Integer type=new Integer (sourceType);
109 return (Comparator )createCompMethod.invoke(null,new Object [] {type});
110 } catch (Exception ex) {
111 org.openide.ErrorManager.getDefault().notify(org.openide.ErrorManager.WARNING, ex);
112 }
113 return null;
114 }
115 for (i=0;i<ordering.length;i++) {
116 try {
117 Integer type=new Integer (ordering[i]|sourceType);
118 comparators[i]=(Comparator )createCompMethod.invoke(null,new Object [] {type});
119 } catch (Exception ex) {
120 org.openide.ErrorManager.getDefault().notify(org.openide.ErrorManager.WARNING, ex);
121 return null;
122 }
123 }
124 return new ArrayComparator(comparators);
125 }
126
127 private static void createElementMap() {
128 Class args[] = new Class [] { Integer.TYPE };
129
130 element2comparator=new HashMap ();
131 try {
132 element2comparator.put(ClassElement.class,ClassComparator.class.getDeclaredMethod("createComparator",args)); element2comparator.put(ConstructorElement.class,ConstructorComparator.class.getDeclaredMethod("createComparator",args)); element2comparator.put(FieldElement.class,FieldComparator.class.getDeclaredMethod("createComparator",args)); element2comparator.put(Identifier.class,IdentifierComparator.class.getDeclaredMethod("createComparator",args)); element2comparator.put(MethodParameter.class,MParameterComparator.class.getDeclaredMethod("createComparator",args)); element2comparator.put(MethodElement.class,MethodComparator.class.getDeclaredMethod("createComparator",args)); element2comparator.put(Type.class,TypeComparator.class.getDeclaredMethod("createComparator",args)); } catch (NoSuchMethodException ex) {
140 org.openide.ErrorManager.getDefault().notify(org.openide.ErrorManager.WARNING, ex);
141 }
142 }
143
144 }
145
146 |
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