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1 package org.apache.slide.projector.processor.core;
2
3 import java.util.HashMap  ;
4 import java.util.Iterator ;
5 import java.util.Map ;
6
7 import org.apache.slide.projector.Constants;
8 import org.apache.slide.projector.Context;
9 import org.apache.slide.projector.HttpContext;
10 import org.apache.slide.projector.ProcessException;
11 import org.apache.slide.projector.Processor;
12 import org.apache.slide.projector.Result;
13 import org.apache.slide.projector.URI;
14 import org.apache.slide.projector.descriptor.BooleanValueDescriptor;
15 import org.apache.slide.projector.descriptor.MapValueDescriptor;
16 import org.apache.slide.projector.descriptor.ParameterDescriptor;
17 import org.apache.slide.projector.descriptor.ResultDescriptor;
18 import org.apache.slide.projector.descriptor.StateDescriptor;
19 import org.apache.slide.projector.descriptor.StringValueDescriptor;
20 import org.apache.slide.projector.descriptor.URIValueDescriptor;
21 import org.apache.slide.projector.i18n.ErrorMessage;
22 import org.apache.slide.projector.i18n.ParameterMessage;
23 import org.apache.slide.projector.processor.SimpleProcessor;
24 import org.apache.slide.projector.processor.process.Process;
25 import org.apache.slide.projector.value.BooleanValue;
26 import org.apache.slide.projector.value.MapValue;
27 import org.apache.slide.projector.value.NullValue;
28 import org.apache.slide.projector.value.StringValue;
29 import org.apache.slide.projector.value.Value;
30
31 public class Link implements Processor {
32 private final static String PROCESSOR = "processor";
33 private final static String CONTINUE = "continue";
34 private final static String PARAMETERS = "parameterS";
35
36 private final static ParameterDescriptor[] parameterDescriptors = new ParameterDescriptor[] {
37 new ParameterDescriptor(PROCESSOR, new ParameterMessage("link/parameter/processor"), new URIValueDescriptor()),
38 new ParameterDescriptor(Process.STEP, new ParameterMessage("link/parameter/step"), new StringValueDescriptor(), new NullValue()),
39 new ParameterDescriptor(CONTINUE, new ParameterMessage("link/parameter/continue"), new BooleanValueDescriptor(), BooleanValue.TRUE),
40 new ParameterDescriptor(PARAMETERS, new ParameterMessage("link/parameter/parameters"), MapValueDescriptor.ANY, new MapValue(new HashMap ()))
41 };
42 private final static ResultDescriptor resultDescriptor = new ResultDescriptor(new StateDescriptor[] { StateDescriptor.OK_DESCRIPTOR });
43
44 public Result process(Map parameter, Context context) throws Exception {
45 URI uri = (URI)parameter.get(PROCESSOR);
46 boolean continueProcess = ((BooleanValue)parameter.get(CONTINUE)).booleanValue();
47 MapValue parameterMap = (MapValue)parameter.get(PARAMETERS);
48 Value step = (Value)parameter.get(Process.STEP);
49 StringBuffer linkBuffer = new StringBuffer (128);
50 if ( context instanceof HttpContext ) {
51 linkBuffer.append(((HttpContext)context).getContextPath()).append(uri);
52 boolean first = true;
53 if ( continueProcess ) {
54 parameterMap.getMap().put(Constants.PROCESS_ID_PARAMETER, context.getProcessId());
55 }
56 if ( step != null ) {
57 parameterMap.getMap().put(Process.STEP, step);
58 }
59 for ( Iterator i = parameterMap.getMap().entrySet().iterator(); i.hasNext(); ) {
60 Map.Entry entry = (Map.Entry )i.next();
61 if ( first ) {
62 linkBuffer.append('?');
63 first = false;
64 } else {
65 linkBuffer.append('&');
66 }
67 linkBuffer.append(entry.getKey());
68 linkBuffer.append('=');
69 linkBuffer.append(entry.getValue());
70 }
71 } else {
72 throw new ProcessException(new ErrorMessage("httpContextRequired"));
73 }
74 return new Result(StateDescriptor.OK, SimpleProcessor.OUTPUT, new StringValue(linkBuffer.toString()));
75 }
76
77 public ParameterDescriptor[] getParameterDescriptors() {
78 return parameterDescriptors;
79 }
80
81 public ResultDescriptor getResultDescriptor() {
82 return resultDescriptor;
83 }
84 }
85 |
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