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java.lang.Objectorg.castor.ddlgen.schemaobject.AbstractSchemaObject
org.castor.ddlgen.schemaobject.KeyGenerator
org.castor.ddlgen.keygenerator.HighLowKeyGenerator
public final class HighLowKeyGenerator
HIGH-LOW key generator will be handled by Castor so no DDL needs to be created. It only requires a table to lookup the next values to be used.
Field Summary | |
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static java.lang.String |
ALGORITHM_NAME
Name of key generator algorithm. |
Fields inherited from class org.castor.ddlgen.schemaobject.AbstractSchemaObject |
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HASHFACTOR |
Constructor Summary | |
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HighLowKeyGenerator(org.exolab.castor.mapping.xml.KeyGeneratorDef definition)
Constructor for HIGH-LOW key generator specified by given defintion. |
Method Summary | |
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int |
getGrabSize()
Get number of new keys the key generator should grab from the sequence table at a time. |
java.lang.String |
getKeyColumn()
Get name of the column which contains table names. |
java.lang.String |
getTableName()
Get name of the special sequence table. |
java.lang.String |
getValueColumn()
Get name of the column which is used to reserve primary key values. |
boolean |
isGlobal()
Shell globally unique keys be generated? |
boolean |
isSameConnection()
Shell the same Connection be used for writing to the sequence table? |
void |
toCreateDDL(DDLWriter writer)
Build create script for the schema object. |
void |
toDropDDL(DDLWriter writer)
Build drop script for the schema object. |
Methods inherited from class org.castor.ddlgen.schemaobject.KeyGenerator |
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equals, getAlias, getTable, hashCode, merge, setAlias, setTable |
Methods inherited from class org.castor.ddlgen.schemaobject.AbstractSchemaObject |
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equals, getConfiguration, getName, setConfiguration, setName |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final java.lang.String ALGORITHM_NAME
Constructor Detail |
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public HighLowKeyGenerator(org.exolab.castor.mapping.xml.KeyGeneratorDef definition) throws GeneratorException
definition
- Key generator definition.
GeneratorException
- If grab size parameter can't be parsed as integer.Method Detail |
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public java.lang.String getTableName()
public java.lang.String getKeyColumn()
public java.lang.String getValueColumn()
public int getGrabSize()
public boolean isSameConnection()
true
it uses the same connection t write to the sequence
table.public boolean isGlobal()
true
globally unique keys are generated.public void toCreateDDL(DDLWriter writer)
writer
- DDLWriter to write schema objects to.public void toDropDDL(DDLWriter writer)
writer
- DDLWriter to write schema objects to.
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