public final class HighLowKeyGenerator extends KeyGenerator
Modifier and Type | Field and Description |
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static String |
ALGORITHM_NAME
Name of key generator algorithm.
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HASHFACTOR
Constructor and Description |
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HighLowKeyGenerator(KeyGeneratorDef definition)
Constructor for HIGH-LOW key generator specified by given defintion.
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Modifier and Type | Method and Description |
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int |
getGrabSize()
Get number of new keys the key generator should grab from the sequence table at a
time.
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String |
getKeyColumn()
Get name of the column which contains table names.
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String |
getTableName()
Get name of the special sequence table.
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String |
getValueColumn()
Get name of the column which is used to reserve primary key values.
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boolean |
isGlobal()
Shell globally unique keys be generated?
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boolean |
isSameConnection()
Shell the same Connection be used for writing to the sequence table?
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void |
toCreateDDL(DDLWriter writer)
Build create script for the schema object.
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void |
toDropDDL(DDLWriter writer)
Build drop script for the schema object.
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equals, getAlias, getTable, hashCode, merge, setAlias, setTable
equals, getConfiguration, getName, setConfiguration, setName
public static final String ALGORITHM_NAME
public HighLowKeyGenerator(KeyGeneratorDef definition) throws GeneratorException
definition
- Key generator definition.GeneratorException
- If grab size parameter can't be parsed as integer.public String getTableName()
public String getKeyColumn()
public 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.Copyright © 2016. All rights reserved.