Class D_LockControl

java.lang.Object
org.apache.derby.impl.services.locks.D_LockControl
All Implemented Interfaces:
Diagnosticable

public class D_LockControl extends Object implements Diagnosticable
  • Field Details

  • Constructor Details

    • D_LockControl

      public D_LockControl()
  • Method Details

    • init

      public void init(Object obj)
      Specified by:
      init in interface Diagnosticable
    • diag

      public String diag() throws StandardException
      Description copied from interface: Diagnosticable
      Default implementation of diagnostic on the object.

      This routine returns a string with whatever diagnostic information you would like to provide about this associated object passed in the init() call.

      This routine should be overriden by a real implementation of the diagnostic information you would like to provide.

      Specified by:
      diag in interface Diagnosticable
      Returns:
      A string with diagnostic information about the object.
      Throws:
      StandardException - Standard exception policy.
    • diag_detail

      public void diag_detail(Properties prop)
      Description copied from interface: Diagnosticable
      Default implementation of detail diagnostic on the object.

      This interface provides a way for an object to pass back pieces of information as requested by the caller. The information is passed back and forth through the properties argument. It is expected that the caller knows what kind of information to ask for, and correctly handles the situation when the diagnostic object can't provide the information.

      As an example assume an object TABLE exists, and that we have created an object D_TABLE that knows how to return the number of pages in the TABLE object. The code to get that information out would looks something like the following:

      print_num_pages(Object table) { Properties prop = new Properties(); prop.put(Page.DIAG_NUM_PAGES, ""); DiagnosticUtil.findDiagnostic(table).diag_detail(prop); System.out.println( "number of pages = " + prop.getProperty(Page.DIAG_NUM_PAGES)); }

      This routine should be overriden if there is detail diagnostics to be provided by a real implementation.

      Specified by:
      diag_detail in interface Diagnosticable
    • debugLock

      static void debugLock(String type, CompatibilitySpace compatibilitySpace, Object group, Lockable ref, Object qualifier, int timeout)
    • debugLock

      static void debugLock(String type, CompatibilitySpace compatibilitySpace, Object group)
    • debugLock

      static void debugLock(String type, CompatibilitySpace compatibilitySpace, Object group, Lockable ref)
    • debugLockString

      static String debugLockString(CompatibilitySpace compatibilitySpace, Object group)
    • debugLockString

      static String debugLockString(CompatibilitySpace compatibilitySpace, Object group, Lockable ref)
    • debugLockString

      static String debugLockString(CompatibilitySpace compatibilitySpace, Object group, Lockable ref, Object qualifier, int timeout)
    • debugAddThreadInfo

      static void debugAddThreadInfo(StringBuffer sb)
    • debugAppendObject

      static void debugAppendObject(StringBuffer sb, String desc, Object item)