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1
16 package org.apache.cocoon.matching.modular;
17
18 import org.apache.avalon.framework.configuration.Configurable;
19 import org.apache.avalon.framework.configuration.Configuration;
20 import org.apache.avalon.framework.configuration.ConfigurationException;
21 import org.apache.avalon.framework.parameters.Parameters;
22 import org.apache.avalon.framework.component.ComponentSelector;
23 import org.apache.avalon.framework.component.ComponentException;
24 import org.apache.avalon.framework.component.ComponentManager;
25 import org.apache.avalon.framework.component.Composable;
26 import org.apache.avalon.framework.activity.Initializable;
27 import org.apache.avalon.framework.activity.Disposable;
28 import org.apache.avalon.framework.thread.ThreadSafe;
29
30 import org.apache.cocoon.components.modules.input.InputModule;
31
32 import org.apache.cocoon.matching.AbstractRegexpMatcher;
33
34 import java.util.Map  ;
35
36
51 public class CachingRegexpMatcher extends AbstractRegexpMatcher
52 implements Configurable, Initializable, Composable, Disposable
53 {
54
55
56 protected ComponentManager manager;
57
58 private String defaultParam;
59 private String defaultInput = "request-param"; private Configuration inputConf = null; String INPUT_MODULE_ROLE = InputModule.ROLE;
63 String INPUT_MODULE_SELECTOR = INPUT_MODULE_ROLE+"Selector";
64
65 private boolean initialized = false;
66 private InputModule input = null;
67 private ComponentSelector inputSelector = null;
68
69
73 public void compose(ComponentManager manager) throws ComponentException {
74
75 this.manager=manager;
76 }
77
78
79
80 public void configure(Configuration config) throws ConfigurationException {
81
82 this.defaultParam = config.getChild("parameter-name").getValue(null);
83 this.inputConf = config.getChild("input-module");
84 this.defaultInput = this.inputConf.getAttribute("name",this.defaultInput);
85 }
86
87
88
89 public void initialize() {
90
91 try {
92 this.inputSelector=(ComponentSelector) this.manager.lookup(INPUT_MODULE_SELECTOR);
94 if (this.defaultInput != null &&
95 this.inputSelector != null &&
96 this.inputSelector.hasComponent(this.defaultInput)
97 ){
98 this.input = (InputModule) this.inputSelector.select(this.defaultInput);
99 if (!(this.input instanceof ThreadSafe && this.inputSelector instanceof ThreadSafe) ) {
100 this.inputSelector.release(this.input);
101 this.manager.release(this.inputSelector);
102 this.input = null;
103 this.inputSelector = null;
104 }
105 this.initialized = true;
106 } else {
107 if (getLogger().isErrorEnabled())
108 getLogger().error("A problem occurred setting up '" + this.defaultInput
109 + "': Selector is "+(this.inputSelector!=null?"not ":"")
110 +"null, Component is "
111 +(this.inputSelector!=null&&this.inputSelector.hasComponent(this.defaultInput)?"known":"unknown"));
112 }
113 } catch (Exception e) {
114 if (getLogger().isWarnEnabled())
115 getLogger().warn("A problem occurred setting up '" + this.defaultInput + "': " + e.getMessage());
116 }
117 }
118
119
120
121 public void dispose() {
122
123 if (!this.initialized)
124 if (getLogger().isErrorEnabled())
125 getLogger().error("Uninitialized Component! FAILING");
126 else
127 if (this.inputSelector != null) {
128 if (this.input != null)
129 this.inputSelector.release(this.input);
130 this.manager.release(this.inputSelector);
131 }
132 }
133
134
135
136 protected String getMatchString(Map objectModel, Parameters parameters) {
137
138 String paramName = parameters.getParameter("parameter-name", this.defaultParam);
139 String inputName = parameters.getParameter("input-module", this.defaultInput);
140
141 if (!this.initialized) {
142 if (getLogger().isErrorEnabled())
143 getLogger().error("Uninitialized Component! FAILING");
144 return null;
145 }
146 if (paramName == null) {
147 if (getLogger().isWarnEnabled())
148 getLogger().warn("No parameter name given. Trying to Continue");
149 }
150 if (inputName == null) {
151 if (getLogger().isWarnEnabled())
152 getLogger().warn("No input module given. FAILING");
153 return null;
154 }
155
156 Object result = null;
157
158 if (this.input != null && inputName.equals(this.defaultInput)) {
159 try {
162 if (this.input != null) {
163 result = this.input.getAttribute(paramName, this.inputConf, objectModel);
164 }
165 } catch (Exception e) {
166 if (getLogger().isWarnEnabled())
167 getLogger().warn("A problem occurred acquiring Parameter '" + paramName
168 + "' from '" + inputName + "': " + e.getMessage());
169 }
170 } else {
171 ComponentSelector iputSelector = null;
174 InputModule iput = null;
175 try {
176 iputSelector=(ComponentSelector) this.manager.lookup(INPUT_MODULE_SELECTOR);
178 if (inputName != null && iputSelector != null && iputSelector.hasComponent(inputName)){
179 iput = (InputModule) iputSelector.select(inputName);
180 }
181 if (iput != null) {
182 result = iput.getAttribute(paramName, this.inputConf, objectModel);
183 }
184 } catch (Exception e) {
185 if (getLogger().isWarnEnabled())
186 getLogger().warn("A problem occurred acquiring Parameter '" + paramName
187 + "' from '" + inputName + "': " + e.getMessage());
188 } finally {
189 if (iputSelector != null) {
191 if (iput != null)
192 iputSelector.release(iput);
193 this.manager.release(iputSelector);
194 }
195 }
196 }
197
198 if (result instanceof String ) {
199 return (String ) result;
200 } else {
201 return result.toString();
202 }
203 }
204 }
205 |
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