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Java Source Code / Java Documentation » Database ORM » db ojb » org.apache.ojb.broker.util.sequence   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.apache.ojb.broker.util.sequence.SequenceManagerHelper SequenceManagerHelper public class SequenceManagerHelper (Code) Helper class for SequenceManager implementations. author:    Armin Waibel version:    $Id: SequenceManagerHelper.java,v 1.17.2.8 2005/12/21 22:28:41 tomdz Exp $ Field Summary final public static  String PROP_SEQ_AS      Property name used to configure sequence manager implementations. final public static  String PROP_SEQ_CACHE      Property name used to configure sequence manager implementations. final public static  String PROP_SEQ_CYCLE      Property name used to configure sequence manager implementations. final public static  String PROP_SEQ_INCREMENT_BY      Property name used to configure sequence manager implementations. final public static  String PROP_SEQ_MAX_VALUE      Property name used to configure sequence manager implementations. final public static  String PROP_SEQ_MIN_VALUE      Property name used to configure sequence manager implementations. final public static  String PROP_SEQ_ORDER      Property name used to configure sequence manager implementations. final public static  String PROP_SEQ_START      Property name used to configure sequence manager implementations. final public static  String PROP_SEQ_START_OLD      Property name used to configure sequence manager implementations. Method Summary public static  String buildSequenceName(PersistenceBroker brokerForClass, FieldDescriptor field, boolean autoNaming)      Returns a unique sequence name (unique across all extents). public static  long getMaxForExtent(PersistenceBroker brokerForClass, FieldDescriptor field)      Lookup all tables associated with given class (search all extent classes) to find the current maximum value for the given field. public static  long getMaxId(PersistenceBroker brokerForClass, Class topLevel, FieldDescriptor original)      Search down all extent classes and return max of all found PK values. public static  long getMaxIdForClass(PersistenceBroker brokerForClass, ClassDescriptor cldForOriginalOrExtent, FieldDescriptor original)      lookup current maximum value for a single field in table the given class descriptor was associated. public static  String getSeqAsValue(Properties prop)      Database sequence properties helper method. Return the datatype to set for the sequence or null if not set. Parameters:   prop - The java.util.Properties instance to use. public static  Long getSeqCacheValue(Properties prop)      Database sequence properties helper method. Return sequence cache value or null if not set. Parameters:   prop - The java.util.Properties instance to use. public static  Boolean getSeqCycleValue(Properties prop)      Database sequence properties helper method. Return sequence cycle Booelan or null if not set. Parameters:   prop - The java.util.Properties instance to use. public static  Long getSeqIncrementBy(Properties prop)      Database sequence properties helper method. Return sequence increment by value or null if not set. Parameters:   prop - The java.util.Properties instance to use. public static  Long getSeqMaxValue(Properties prop)      Database sequence properties helper method. Return sequence max value or null if not set. Parameters:   prop - The java.util.Properties instance to use. public static  Long getSeqMinValue(Properties prop)      Database sequence properties helper method. Return sequence min value or null if not set. Parameters:   prop - The java.util.Properties instance to use. public static  Boolean getSeqOrderValue(Properties prop)      Database sequence properties helper method. Return sequence order Booelan or null if not set. Parameters:   prop - The java.util.Properties instance to use. public static  Long getSeqStart(Properties prop)      Database sequence properties helper method. Return sequence start value or null if not set. Parameters:   prop - The java.util.Properties instance to use. Field Detail PROP_SEQ_AS final public static String PROP_SEQ_AS(Code) Property name used to configure sequence manager implementations. PROP_SEQ_CACHE final public static String PROP_SEQ_CACHE(Code) Property name used to configure sequence manager implementations. PROP_SEQ_CYCLE final public static String PROP_SEQ_CYCLE(Code) Property name used to configure sequence manager implementations. PROP_SEQ_INCREMENT_BY final public static String PROP_SEQ_INCREMENT_BY(Code) Property name used to configure sequence manager implementations. PROP_SEQ_MAX_VALUE final public static String PROP_SEQ_MAX_VALUE(Code) Property name used to configure sequence manager implementations. PROP_SEQ_MIN_VALUE final public static String PROP_SEQ_MIN_VALUE(Code) Property name used to configure sequence manager implementations. PROP_SEQ_ORDER final public static String PROP_SEQ_ORDER(Code) Property name used to configure sequence manager implementations. PROP_SEQ_START final public static String PROP_SEQ_START(Code) Property name used to configure sequence manager implementations. PROP_SEQ_START_OLD final public static String PROP_SEQ_START_OLD(Code) Property name used to configure sequence manager implementations. SequenceManagerHelper.PROP_SEQ_START Method Detail buildSequenceName public static String buildSequenceName(PersistenceBroker brokerForClass, FieldDescriptor field, boolean autoNaming) throws SequenceManagerException(Code) Returns a unique sequence name (unique across all extents). If we found a non null value for the 'sequence-name' attribute in the field descriptor, we use the 'sequence-name' value as sequence name. Else if the top-level class of the target class has extents, we take the first extent class table name of the extents as sequence name. Else we take the table name of the target class. If the method argument 'autoNaming' is true, the generated sequence name will be set in the given field descriptor using org.apache.ojb.broker.metadata.FieldDescriptor.setSequenceName to speed up sequence name lookup in future calls. Parameters:   brokerForClass - current used PB instance Parameters:   field - target field Parameters:   autoNaming - if 'false' no auto sequence name was build anda exception was throw if none could be found in field. getMaxForExtent public static long getMaxForExtent(PersistenceBroker brokerForClass, FieldDescriptor field) throws PersistenceBrokerException(Code) Lookup all tables associated with given class (search all extent classes) to find the current maximum value for the given field. Note: Only works for long autoincrement fields. Parameters:   brokerForClass - persistence broker instance match the database of thegiven field/class Parameters:   field - the target field getMaxId public static long getMaxId(PersistenceBroker brokerForClass, Class topLevel, FieldDescriptor original) throws PersistenceBrokerException(Code) Search down all extent classes and return max of all found PK values. getMaxIdForClass public static long getMaxIdForClass(PersistenceBroker brokerForClass, ClassDescriptor cldForOriginalOrExtent, FieldDescriptor original) throws PersistenceBrokerException(Code) lookup current maximum value for a single field in table the given class descriptor was associated. getSeqAsValue public static String getSeqAsValue(Properties prop)(Code) Database sequence properties helper method. Return the datatype to set for the sequence or null if not set. Parameters:   prop - The java.util.Properties instance to use. The found expression or null. getSeqCacheValue public static Long getSeqCacheValue(Properties prop)(Code) Database sequence properties helper method. Return sequence cache value or null if not set. Parameters:   prop - The java.util.Properties instance to use. The found expression or null. getSeqCycleValue public static Boolean getSeqCycleValue(Properties prop)(Code) Database sequence properties helper method. Return sequence cycle Booelan or null if not set. Parameters:   prop - The java.util.Properties instance to use. The found expression or null. getSeqIncrementBy public static Long getSeqIncrementBy(Properties prop)(Code) Database sequence properties helper method. Return sequence increment by value or null if not set. Parameters:   prop - The java.util.Properties instance to use. The found expression or null. getSeqMaxValue public static Long getSeqMaxValue(Properties prop)(Code) Database sequence properties helper method. Return sequence max value or null if not set. Parameters:   prop - The java.util.Properties instance to use. The found expression or null. getSeqMinValue public static Long getSeqMinValue(Properties prop)(Code) Database sequence properties helper method. Return sequence min value or null if not set. Parameters:   prop - The java.util.Properties instance to use. The found expression or null. getSeqOrderValue public static Boolean getSeqOrderValue(Properties prop)(Code) Database sequence properties helper method. Return sequence order Booelan or null if not set. Parameters:   prop - The java.util.Properties instance to use. The found expression or null. getSeqStart public static Long getSeqStart(Properties prop)(Code) Database sequence properties helper method. Return sequence start value or null if not set. Parameters:   prop - The java.util.Properties instance to use. The found expression or null. 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