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1
23 package org.objectweb.jorm.naming.lib;
24
25 import org.objectweb.jorm.naming.api.PBinder;
26 import org.objectweb.jorm.naming.api.PName;
27 import org.objectweb.jorm.naming.api.PExceptionNaming;
28 import org.objectweb.jorm.api.PBinding;
29 import org.objectweb.jorm.api.PException;
30 import org.objectweb.jorm.api.PExceptionProtocol;
31 import org.objectweb.jorm.api.PBindingCtrl;
32 import org.objectweb.jorm.api.PStateGraph;
33 import org.objectweb.jorm.api.PClassMapping;
34 import org.objectweb.perseus.cache.api.CacheEntry;
35 import org.objectweb.perseus.cache.api.CacheException;
36 import org.objectweb.perseus.cache.api.FixableCacheEntry;
37 import org.objectweb.perseus.cache.api.CacheManager;
38
39
44 public abstract class BasicPBinder
45 extends BasicPNamingContext
46 implements PBinder {
47
48 protected CacheManager cache;
49 private PClassMapping pcm;
50 protected PName nullPName;
51
52 public BasicPBinder() {
53 }
54
55 public BasicPBinder(PName nullPName) {
56 this.nullPName = nullPName;
57 }
58
59 public String  getClassName() {
60 return ptype.getJormName();
61 }
62
63
64
67 public PBinding lookup(PName pn) throws PException {
68 if (pn == null) {
69 throw new PExceptionNaming("[" + getClassName() + "]: this pname is null");
70 }
71 if (pn.isNull()) {
72 return null;
73 }
74 if (cache == null) {
75 throw new PExceptionProtocol("No internal cache: should be managed externally!");
76 }
77 CacheEntry ce = cache.lookup(pn);
78 if (ce != null) {
79 return (PBinding) ce.getCeObject();
80 }
81 return null;
82 }
83
84 public void bind(PName pn, PBindingCtrl pb) throws PException {
85 if (pn == null)
86 throw new PExceptionNaming("[" + getClassName() + "]: this pname is null");
87 if (pb == null)
88 throw new PExceptionNaming("[" + getClassName() + "]: this pbinding is null");
89 if (!pn.getClass().equals(getNull().getClass()))
90 throw new PExceptionNaming("Can only bind " + getNull().getClass() + ", found: " + pn);
91 if (!pn.getPNameManager().equals(this))
92 throw new PExceptionNaming("[" + getClassName() + "]: this pname is not valid in this binder ("
93 + ", \nthis:" + this
94 + ", \nthis.type:" + this.getPType().getJormName()
95 + ", \nthis.pcm:" + this.getBinderClassMapping()
96 + ", \npn.pnc: " + pn.getPNameManager()
97 + ", \npn.pnc.type: " + pn.getPNameManager().getPType().getJormName()
98 + ", \npn.pnc.pcm: " + ((PBinder) pn.getPNameManager()).getBinderClassMapping()
99 + ", \npn:" + pn + ")");
100 if (!pb.getPClassMapping().equals(pcm))
101 throw new PExceptionNaming("[" + getClassName() + "]: this pbinding is not valid in this binder");
102 if (pn.isNull())
103 throw new PExceptionNaming("[" + getClassName() + "]: this PName represent the null value");
104 byte nextstate = PStateGraph.nextStatePBinding(pb.getStatus(),
105 PBinding.ACTION_BIND);
106 if (cache != null) {
108 synchronized (cache) {
109 try {
110 cache.fix(cache.bind(pn, pb));
111 } catch (CacheException e) {
112 throw new PException(e, "[" + getClassName() + "]: problem with cache management");
113 }
114 }
115 }
116 pb.setPName(pn);
117 pb.setStatus(nextstate);
118 }
119
120 public PClassMapping getBinderClassMapping() {
121 return pcm;
122 }
123
124 public void setPClassMapping(PClassMapping pcm) {
125 this.pcm = pcm;
126 }
127
128 public void unbind(PBindingCtrl pb) throws PException {
129 byte nextstate = PStateGraph.nextStatePBinding(pb.getStatus(),
130 PBinding.ACTION_UNBIND);
131 if (nextstate == pb.getStatus())
133 return;
134 if (pb == null)
136 throw new PExceptionNaming("[" + getClassName() + "]: this pbinding is null");
137 PName pn = pb.getPName();
138 if (pn == null)
139 throw new PExceptionNaming("[" + getClassName() + "]: this PBinding is not bounded with a pname");
140 if (!pb.getPClassMapping().equals(pcm))
141 throw new PExceptionNaming("[" + getClassName() + "]: this pbinding is not valid in this binder");
142 if (cache != null) {
143 synchronized (cache) {
144 try {
145 if (((FixableCacheEntry) cache).getCeFixCount() == 0) {
146 pb.setPName(null);
148 pb.setStatus(nextstate);
149 } else {
150 CacheEntry ce = cache.lookup(pn);
152 if (ce != null) {
153 cache.unfix(ce);
154 }
155 }
156 } catch (CacheException e) {
157 throw new PException(e, "[" + getClassName() + "]: problem with cache management");
158 }
159 }
160 } else {
161 pb.setPName(null);
162 pb.setStatus(nextstate);
163 }
164 }
165
166 public CacheManager getCacheManager() {
167 return cache;
168 }
169
170 public void setCacheManager(CacheManager cm) throws PException {
171 cache = cm;
172 }
173
174 public PName getNull() {
175 return nullPName;
176 }
177
178 public void setNullPName(Object o) throws PException {
179 }
180 }
181 |
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