org.objectweb.cjdbc.common.sql.metadata.MetadataContainer Class Reference

List of all members.

Public Member Functions
	MetadataContainer (String url)
boolean	isCompatible (MetadataContainer container, Trace logger)
String	toString ()
String	getUrl ()
Static Public Member Functions
String	getContainerKey (String methodName, Class[] parametersType, Object[] arguments)

---

Detailed Description

a MetadataContainer is basically a hashtable of jdbc metadata. We may want to override a few options from the usual Hashtable so I've put it in a separate class.

Author:

Nicolas Modrzyk

Emmanuel Cecchet

Version:

1.0

Definition at line 41 of file MetadataContainer.java.

---

Constructor & Destructor Documentation

org.objectweb.cjdbc.common.sql.metadata.MetadataContainer.MetadataContainer (  String  url  )

Creates a new MetadataContainer object Parameters: url  which url is this container pointed to Definition at line 51 of file MetadataContainer.java. { this.url = url; }

---

Member Function Documentation

String org.objectweb.cjdbc.common.sql.metadata.MetadataContainer.getContainerKey (  String  methodName, Class[]  parametersType, Object[]  arguments )  [static]

Get the metadata container key for the given method. Parameters: methodName  method invoked to generate the key in the container parametersType  parameters type of invoked method arguments  arguments used to invoke the method Definition at line 130 of file MetadataContainer.java. { if (parametersType == null) { // Function without parameters, just store the function name as the key return methodName; } else { // Include all argument in function name StringBuffer key = new StringBuffer(methodName); key.append('('); for (int i = 0; i < parametersType.length; i++) { Class c = parametersType[i]; if (c != null) key.append(c.getName()); else key.append("null"); key.append('='); Object arg = arguments[i]; if (arg != null) key.append(arg.toString()); else key.append("null"); key.append(','); } // Replace last comma with ) key.setCharAt(key.length() - 1, ')'); return key.toString(); } }

String org.objectweb.cjdbc.common.sql.metadata.MetadataContainer.getUrl (   )

Returns the url value. Returns: Returns the url. Definition at line 118 of file MetadataContainer.java. Referenced by org.objectweb.cjdbc.common.sql.metadata.MetadataContainer.isCompatible(). { return url; }

boolean org.objectweb.cjdbc.common.sql.metadata.MetadataContainer.isCompatible (  MetadataContainer  container, Trace  logger )

Check to see if this container metadata is compatible with another container. A general boolean is returned, but all incompatible values are logged as warning in the given parameter Parameters: container  the container to check compatibility with logger  the logger, if null, echo on stderr Returns: true if all metadata are identical. Definition at line 65 of file MetadataContainer.java. References org.objectweb.cjdbc.common.sql.metadata.MetadataContainer.getUrl(), org.objectweb.cjdbc.common.sql.metadata.MetadataContainer.isCompatible(), and org.objectweb.cjdbc.common.log.Trace.warn(). Referenced by org.objectweb.cjdbc.common.sql.metadata.MetadataContainer.isCompatible(). { if (keySet() == null) return container.keySet() == null; Iterator keys = keySet().iterator(); boolean isCompatible = true; String key; Object value1; Object value2; String log; while (keys.hasNext()) { key = (String) keys.next(); value1 = get(key); value2 = container.get(key); if (!value1.equals(value2)) { isCompatible = false; log = "Metadata key [" + key + "] is not compatible. (Backends are: [" + url + "] and [" + container.getUrl() + "] ; Values are:[" + value1 + "] and [" + value2 + "])"; if (logger != null) logger.warn(log); else System.err.println(log); } } return isCompatible; }

String org.objectweb.cjdbc.common.sql.metadata.MetadataContainer.toString (   )

See also: java.lang.Object#toString() Definition at line 98 of file MetadataContainer.java. { if (keySet() == null) return "no metadata"; StringBuffer buffer = new StringBuffer(); Iterator keys = keySet().iterator(); String element; while (keys.hasNext()) { element = (String) keys.next(); buffer.append(element + " : " + this.get(element) + line); } return buffer.toString(); }

---

The documentation for this class was generated from the following file:

• MetadataContainer.java

---