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This section briefly describes typical usage patterns and provides a starting point for developers using P4Java for the first time. Ensure that any callbacks that you register or use do not cause blocking or deadlocks. If you attempt to set a IOptionsServer object's charset to a charset not supported by both the Perforce server and the local JDK installation, you will get an appropriate exception; similarly, if you try to for example sync a file with an unsupported character set encoding, you will also get an exception. List lists of depot, client, and local files in or associated with the Perforce client workspace, through the IOptionsServer and IClient interfaces. The Java properties parameter passed to the factory in the first example is null, but you can pass in a variety of generic and implementation-specific values as described in Character Set Support. P4Java's IOptionsServer object is partially thread-safe.

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P4jwva.jar is currently no diff method on IFileSpec interfaces to compare versions of the same Perforce-managed file, but this functionality may be easily implemented with a combination of IOptionsServer. Note the way RequestException and ConnectionException events are handled separately: These samples are used throughout this document to illustrate common usage patterns and simple code snippets, and can also be used as the basis for further user experiments with P4Java development.

As documented in the main Perforce documentation, Perforce form triggers can cause additional output on form commands such as "change" or "client", even when the trigger succeeds.

All non-optional parts of the URI must be filled p4java.jr. The snippet below, from the sample ListFilesDemo class, illustrates a very common pattern used when retrieving a list of files in this case from the getDepotFiles method:. We strongly recommend setting the progName and progVersion properties either globally or for each IOptionsServer instance either via the JVM, by using properties passed to ServerFactory.

Properties intended for P4Java use can have "long form" or "short form" names. This means that over time, the P4Java-internal versions of the objects may get out of date with the server originals, or the server originals may need to be updated with corresponding changes made to the P4Java versions. To obtain the best resource and memory allocation strategies for your specific threading needs, experiment with JVM invocation parameters. This allows a p4jafa.jar to catch all such P4JavaError s, for example, in an outer loop, but to process "normal" P4JavaException s in inner blocks and loops as they occur.

List lists of depot, client, and local files in or associated with the Perforce client workspace, through the IOptionsServer and IClient interfaces. Many examples below are snippets from or refer to the P4Java p4java.jaar programs available in the Perforce public depot.

See P4Java properties for an explanation. Ensure that p4javva.jar callbacks that you register or use do not cause blocking or deadlocks. We use a few P4Ant tasks to commit code to our perforce depots from within an Ant task. Jason Kulatunga Jason Kulatunga 5, 1 1 gold badge 20 20 silver badges 49 49 bronze badges. Contains a small handful of API-wide definitions and classes for activities like p4java.jaf, tracing, and package metadata. For example, the following code sets the program name and version using the UsageOptions class:.

These properties are typically used for things like preferred temporary file directory locations, p4javq.jar version and name information for Perforce server usage, and the location of a suitable Perforce authentication tickets file see Authentication for details.

Usage is straightforward, but note the potential for deadlocks p4javx.jar blocking if you are not careful with callback method implementation.

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Passing properties in this way is useful for fundamental P4Java-wide values that do not change over the lifetime of the P4Java invocation and that do not differ from one IOptionsServer instance to another. These implementations are available for use by participating p4jav.jar, but are not mandatory.

P4Java file methods are also designed to be composable: The values they usually represent must be explicitly set by appropriate IOptionsServer methods or other methods. If found, the ticket is stored on the IOptionsServer object and used as the Perforce authentication ticket.

Participating applications typically use the IClient interface to access Perforce client services such as syncing and adding, editing, or deleting files.

P4Java represents Perforce server objects such as changelists, branch mappings, job specs, and so on to the end user through associated interfaces such as IChangeListIBranchSpecand so on onto objects within P4Java that mirror or proxy the server-side originals. For things like changelists, jobs, branches, and so on, to p4iava.jar the full version of the Perforce object such as a specific client workspaceyou typically do a p4 client — o with the workspace's name.

P4Java uses JDK 5 and later parameterized types for these lists.

ICommandCallbackis a useful way to get blow-by-blow command status messages and trigger output messages from the server in a way that can mimic the p4 command line client's output. The IOptionsServer object's ticket should be set to null to cause a re-reading of the ticket value from the p4 tickets p4java.ja.

The following code shows an example of passing properties to a IOptionsServer instance using the URI string query mechanism:. Long form names are ;4java.jar, and are always prefixed by the string represented by PropertyDefs. See the following Knowledge Base article: These exceptions are not used to signal file operation problems at the individual file level — see Perforce file operations for details about individual file error handling.