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| package com.agical.rdoc.velocity.impl; |
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| import java.io.IOException; |
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| import java.io.StringWriter; |
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| import java.io.UnsupportedEncodingException; |
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| import java.util.Properties; |
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| |
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| import org.apache.velocity.Template; |
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| import org.apache.velocity.VelocityContext; |
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| import org.apache.velocity.app.VelocityEngine; |
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| import org.apache.velocity.context.Context; |
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| import org.apache.velocity.exception.MethodInvocationException; |
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| import org.apache.velocity.exception.ParseErrorException; |
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| import org.apache.velocity.exception.ResourceNotFoundException; |
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| |
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| import com.agical.rdoc.core.exception.RDocParseSystemException; |
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| import com.agical.rdoc.core.exception.ResourceNotFoundSystemException; |
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| import com.agical.rdoc.core.resourcemanager.ResourceProvider; |
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| import com.agical.rdoc.core.resourcemanager.ResourceRoot; |
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| import com.agical.rdoc.core.target.TargetProvider; |
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| import com.agical.rdoc.velocity.VelocityGenerationSystemException; |
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| import com.agical.rdoc.velocity.VelocityManager; |
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| import com.agical.rmock.core.configuration.NameSpaceProvider; |
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| import com.agical.rmock.core.exception.UnexpectedFatalSystemException; |
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| |
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| public class VelocityManagerImpl implements VelocityManager { |
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| private ResourceProvider resourceProvider; |
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| private VelocityEngine engine; |
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| private TargetProvider targetProvider; |
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| private NameSpaceProvider nameSpaceProvider = NameSpaceProvider.NULL; |
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| |
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24
| private synchronized VelocityEngine getEngine() {
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33 |
24
| if (engine == null) {
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34 |
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| engine = new VelocityEngine();
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35 |
13
| try {
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36 |
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| Properties properties = new Properties();
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37 |
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| ResourceRoot[] roots = resourceProvider.getRoots();
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38 |
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| StringBuffer loadersProperty = new StringBuffer();
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39 |
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| for (int i = 0; i < roots.length; i++) {
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48
| String root = "resourceroot"+i;
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41 |
48
| loadersProperty.append(root).append(", ");
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48
| properties.setProperty(root+".resource.loader.description", root);
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48
| properties.setProperty(root+".resource.loader.class", "org.apache.velocity.runtime.resource.loader.FileResourceLoader");
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44 |
48
| properties.setProperty(root+".resource.loader.path", roots[i].getUrl().getPath());
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| properties.setProperty(root+".resource.loader.cache", "true");
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48
| properties.setProperty(root+".resource.loader.modificationCheckInterval", "2");
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| } |
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| properties.setProperty("targetroot.resource.loader.description", "targetroot");
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49 |
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| properties.setProperty("targetroot.resource.loader.class", "org.apache.velocity.runtime.resource.loader.FileResourceLoader");
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| properties.setProperty("targetroot.resource.loader.path", targetProvider.getTarget().getAbsolutePath());
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51 |
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| properties.setProperty("targetroot.resource.loader.cache", "true");
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| properties.setProperty("targetroot.resource.loader.modificationCheckInterval", "2");
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| |
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| properties.setProperty("classpath.resource.loader.description", "Velocity Classpath Resource Loader");
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55 |
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| properties.setProperty("classpath.resource.loader.class", "org.apache.velocity.runtime.resource.loader.ClasspathResourceLoader");
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56 |
| |
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57 |
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| loadersProperty.append("targetroot, classpath");
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| |
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59 |
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| properties.setProperty("resource.loader", loadersProperty.toString());
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60 |
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| engine.init(properties);
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61 |
| } catch (RuntimeException e) { |
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0
| throw e;
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| } |
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| catch (Exception e) { |
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0
| throw new UnexpectedFatalSystemException("Problems initializing velocity", e);
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| } |
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| } |
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24
| return engine;
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| } |
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| public void setResourceProvider(ResourceProvider resourceProvider) {
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| this.resourceProvider = resourceProvider;
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| } |
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| |
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| public Template getTemplate(String template) {
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80 |
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| try {
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| return getEngine().getTemplate(template);
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| } catch (ResourceNotFoundException e) { |
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0
| throw new ResourceNotFoundSystemException(e);
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| } catch (ParseErrorException e) { |
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| throw new RDocParseSystemException(e);
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| } catch (Exception e) { |
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| throw new UnexpectedFatalSystemException("Error getting the template <"+template+">", e);
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| } |
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| } |
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| |
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| public void setTargetProvider(TargetProvider targetProvider) {
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| this.targetProvider = targetProvider;
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| } |
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| |
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26
| public Context createContext() {
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| return new VelocityContext( new VelocityContext(nameSpaceProvider.getNameSpaces()) );
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| } |
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| |
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| |
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100 |
12
| public String evaluate(String template, Context velocityContext) {
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101 |
12
| if (template == null) {
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102 |
1
| return "";
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| } |
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104 |
| |
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105 |
11
| StringWriter stringWriter = new StringWriter();
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106 |
11
| try {
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107 |
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| getEngine().evaluate( velocityContext, stringWriter, "", template );
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108 |
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| stringWriter.close();
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109 |
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| return stringWriter.toString();
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110 |
| } catch (ResourceNotFoundException e) { |
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0
| throw new ResourceNotFoundSystemException(e);
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| } catch (ParseErrorException e) { |
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0
| throw new VelocityGenerationSystemException(e);
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| } catch (MethodInvocationException e) { |
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0
| throw new VelocityGenerationSystemException(e);
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| } catch (UnsupportedEncodingException e) { |
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117 |
0
| throw new UnexpectedFatalSystemException("Failed to encode to UTF-8", e);
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| } catch (IOException e) { |
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0
| throw new UnexpectedFatalSystemException(e);
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| } |
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| } |
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| |
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124 |
25
| public void setNameSpaceProvider(NameSpaceProvider nameSpaceProvider) {
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125 |
25
| this.nameSpaceProvider = nameSpaceProvider;
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| } |
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127 |
| |
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| } |
