1 package org.apache.turbine.services.rundata;
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22 import javax.servlet.ServletConfig;
23 import javax.servlet.http.HttpServletRequest;
24 import javax.servlet.http.HttpServletResponse;
25
26 import org.apache.turbine.services.Service;
27 import org.apache.turbine.util.RunData;
28 import org.apache.turbine.util.TurbineException;
29
30 /***
31 * The RunData Service provides the implementations for RunData and
32 * related interfaces required by request processing. It supports
33 * different configurations of implementations, which can be selected
34 * by specifying a configuration key. It may use pooling, in which case
35 * the implementations should implement the Recyclable interface.
36 *
37 * @author <a href="mailto:ilkka.priha@simsoft.fi">Ilkka Priha</a>
38 * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
39 * @version $Id: RunDataService.java 534527 2007-05-02 16:10:59Z tv $
40 */
41 public interface RunDataService
42 extends Service
43 {
44 /*** The key under which this service is stored in TurbineServices. */
45 String SERVICE_NAME = "RunDataService";
46
47 /*** The default parser configuration key. */
48 String DEFAULT_CONFIG = "default";
49
50 /*** The property for the implemention of the RunData object */
51 String RUN_DATA_KEY = "run.data";
52
53 /*** The property for the implemention of the ParameterParser. */
54 String PARAMETER_PARSER_KEY = "parameter.parser";
55
56 /*** The property for the implemention of the CookieParser. */
57 String COOKIE_PARSER_KEY = "cookie.parser";
58
59 /***
60 * Gets a default RunData object.
61 *
62 * @param req a servlet request.
63 * @param res a servlet response.
64 * @param config a servlet config.
65 * @return a new or recycled RunData object.
66 * @throws TurbineException if the operation fails.
67 */
68 RunData getRunData(HttpServletRequest req,
69 HttpServletResponse res,
70 ServletConfig config)
71 throws TurbineException;
72
73 /***
74 * Gets a RunData object from a specific configuration.
75 *
76 * @param key a configuration key.
77 * @param req a servlet request.
78 * @param res a servlet response.
79 * @param config a servlet config.
80 * @return a new or recycled RunData object.
81 * @throws TurbineException if the operation fails.
82 */
83 RunData getRunData(String key,
84 HttpServletRequest req,
85 HttpServletResponse res,
86 ServletConfig config)
87 throws TurbineException;
88
89 /***
90 * Puts the used RunData object back to the factory for recycling.
91 *
92 * @param data the used RunData object.
93 * @return true, if pooling is supported and the object was accepted.
94 */
95 boolean putRunData(RunData data);
96 }