Purpose	Configures the logging system
Type	xs:anyURI
Default Value	The logging system not initialized with a warning if this property is not present.

Orbeon Forms uses the Log4J logging framework. Log4J is configured with an XML file conforming to the Log4J DTD. Here is a sample Log4J configuration:

If this property is not set, the Log4J initialization is skipped. This is useful if another subsystem of your application has already initialized Log4J prior to the loading of Orbeon Forms.

Purpose	Setup the size of the Orbeon Forms cache
Type	xs:integer
Default Value	200

Orbeon Forms uses an efficient caching system. Orbeon Forms automatically determines what can be cached and when to expire objects. The cache has a default size of 200, meaning that it can hold 200 objects. This size is reasonable for most applications. A bigger cache tends to make the application faster, but it uses more memory. To tune the cache size, see the suggestions in the Performance and Tuning section.

Purpose	Controls the automatic processor validation
Type	xs:boolean
Default Value	Enabled

Many processors validate their configuration input with a schema. This validation is automatic and allows meaningful error reporting. To potentially improve the performance of the application, validation can be disabled in production environments. It is however strongly discouraged to do so, as validation can highly contribute to the robustness of the application.

Purpose	Controls user-defined validation
Type	boolean
Default Value	Enabled

User-defined validation is activated in the XML Pipeline Definition Language with the attributes schema-href and schema-uri. To potentially improve the performance of the application, validation can be disabled in production environments. It is however strongly discouraged to do so, as validation can highly contribute to the robustness of the application.

Purpose	Defines Orbeon Forms processors
Type	xs:anyURI
Default Value	A default prologue is loaded automatically

Loads a Orbeon Forms prologue file, where processors are declared. Orbeon Forms is bundled with a default prologue file containing all processors. You can create processors (see the processor API) and declare them in a custom prologue. The custom prologue doesn't replace, but completes the default prologue. It is possible to override a default processor with a custom implementation by binding it to the same URI as the default processor. The following example shows a simple custom prologue declaring an hypothetical processor:

Purpose	Enable inspection SAX events
Type	xs:boolean
Default Value	false

SAX is the underlying mechanism in Orbeon Forms by which processors receive and generate XML data. Given only the constraints of the SAX API, it is possible for a processor to generate an invalid sequence of SAX events. Another processor that receives that invalid sequence of events may or may not be able to deal with it without throwing an exception. Some processors try to process invalid SAX events, while others throw exceptions. This means that when a processor generating an invalid sequence of SAX events is used in a pipeline, the problem might go unnoticed, or it might cause some other processor downstream to throw an exception.

To deal more efficiently with those cases, the sax.inspection property can be set to true. When it is set to true, the pipeline engine checks the outputs of every processor at runtime and makes sure that valid SAX events are generated. When an error is detected, an exception is thrown right away, with information about the processor that generated the invalid SAX events.

There is a performance penalty for enabling SAX events inspection. So this property should not be enabled on a production system.

Purpose	Specify the name of a class that implements the interface org.orbeon.oxf.pipeline.api.PipelineContext.Trace.
Type	xs:NCName
Default Value	None

Orbeon Forms ships with two implementations of Trace:

• NetworkTrace sends profiling information to Studio. Studio then displays the data in the trace views. When using NetworkTrace, you also need to specify the host and port to which the information is sent to with the processor.trace.host and processor.trace.port properties.
• StdOutTrace simply dumps profiling information to standard output.

Purpose	Specify the host name that org.orbeon.oxf.processor.NetworkTrace will send data to.
Type	xs:NMTOKEN
Default Value	localhost

Purpose	Specify the port that org.orbeon.oxf.processor.NetworkTrace will send data to.
Type	xs:nonNegativeInteger
Default Value	9191

Name	classpath
Purpose	Defines a directory where Java class files are located. The Java processor dynamically compiles Java code, and may need some libraries. This property defines the classpath used by the compiler.
Processor name	oxf:java
Type	xs:string
Default Value	None

Name	jarpath
Purpose	Defines a list of directories where JAR files are located. The Java processor dynamically compiles Java code, and may need some libraries. This property defines a "JAR path", a list of directories containing JAR files that will be added to the classpath when compiling and running the processor executed by the Java processor.
Processor name	oxf:java
Type	xs:string
Default Value	None

Name	compiler-jar
Purpose	Define a URL pointing to a JAR file containing the Java compiler to use. If this property is set, the Java processor adds the specified JAR file to the class path used to search for the main compiler class.
Processor name	oxf:java
Type	xs:anyURI
Default Value	If the property is not specified, the Java processor tries to load the main compiler class first using the current class loader. If this fails, it retrieves the java.home system property which specifies a directory on disk. If that directory is called jre, and there exists a JAR file relative to that directory under ../lib/tools.jar, that JAR file is added to the class path used to search for the main compiler class. This covers most cases where the standard Sun JDK is used, so that the compiler-jar property does not have to be specified.

Name	compiler-class
Purpose	Define a class name containing the Java compiler to use. The Java processor loads the corresponding class and calls a static method on this class with the following signature: public static int compile(String[] commandLine, PrintWriter printWriter).
Processor name	oxf:java
Type	xs:string
Default Value	com.sun.tools.javac.Main

The following property can be specified globally as a property instead of being part of the processor configuration:

Name	smtp-host
Purpose	Configure the SMTP host for all email processors. This global property can be overridden by local processor configurations.
Processor name	oxf:email
Type	xs:string
Default Value	None

Name	test-smtp-host
Purpose	Configure a test SMTP host for all email processors. This global property when specified overrides all the other SMTP host configurations for all Email processors, whether in the processor configuration or using the smtp-host property.
Processor name	oxf:email
Type	xs:string
Default Value	None

Name	test-to
Purpose	Configure a test recipient email address for all email processors. This global property when specified overrides all the other SMTP recipient configurations for all Email processors.
Processor name	oxf:email
Type	xs:string
Default Value	None