profiler

Use eclipselink.profiler to specify which performance profiler to use in order to capture runtime statistics.

Values

Table 5-83 describes this persistence property's values.

Table 5-83 Valid Values for profiler

Value	Description
`NoProfiler`	Do not use a performance profiler.
`PerformanceProfiler`	Use EclipseLink performance profiler (`org.eclipse.persistence.tools.profiler.PerformanceProfiler` class).
`QueryMonitor`	Monitor query executions and cache hits (`org.eclipse.persistence.tools.profiler.QueryMonitor` class). This option provides a simple low-overhead means for measuring performance of query executions and cache hits. You may want to use this option for performance analysis in a complex system.
Custom profiler	Specify a custom profiler class name which implements `SessionProfiler` and provides a no-argument constructor.

Usage

Examples

Example 5-81 shows how to use this property in the persistence.xml file.

Example 5-81 Using profiler in persistence.xml

<property name="eclipselink.profiler" value="PerformanceProfiler"/>

Example 5-82 shows how to use this property in a property map.

Example 5-82 Using profiler in Property Map

import org.eclipse.persistence.config.ProfilerType;import org.eclipse.persistence.config.PersistenceUnitProperties;
propertiesMap.put(PersistenceUnitProperties.PROFILER, ProfilerType.PerformanceProfiler);