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org.springframework.jdbc.support.incrementer
Class AbstractIdentityColumnMaxValueIncrementer
- java.lang.Object
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- org.springframework.jdbc.support.incrementer.AbstractDataFieldMaxValueIncrementer
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- org.springframework.jdbc.support.incrementer.AbstractColumnMaxValueIncrementer
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- org.springframework.jdbc.support.incrementer.AbstractIdentityColumnMaxValueIncrementer
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- All Implemented Interfaces:
- InitializingBean, DataFieldMaxValueIncrementer
- Direct Known Subclasses:
- DerbyMaxValueIncrementer, HsqlMaxValueIncrementer, SqlServerMaxValueIncrementer, SybaseMaxValueIncrementer
public abstract class AbstractIdentityColumnMaxValueIncrementer extends AbstractColumnMaxValueIncrementer
Abstract base class forDataFieldMaxValueIncrementerimplementations which are based on identity columns in a sequence-like table.- Since:
- 4.1.2
- Author:
- Juergen Hoeller, Thomas Risberg
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Field Summary
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Fields inherited from class org.springframework.jdbc.support.incrementer.AbstractDataFieldMaxValueIncrementer
paddingLength
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Constructor Summary
Constructors Constructor and Description AbstractIdentityColumnMaxValueIncrementer()Default constructor for bean property style usage.AbstractIdentityColumnMaxValueIncrementer(javax.sql.DataSource dataSource, java.lang.String incrementerName, java.lang.String columnName)
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method and Description protected java.lang.StringgetDeleteStatement(long[] values)Statement to use to clean up "sequence" values.protected abstract java.lang.StringgetIdentityStatement()Statement to use to obtain the current identity value.protected abstract java.lang.StringgetIncrementStatement()Statement to use to increment the "sequence" value.protected longgetNextKey()Determine the next key to use, as a long.booleanisDeleteSpecificValues()Return whether to delete the entire range below the current maximum key value (false- the default), or the specifically generated values (true).voidsetDeleteSpecificValues(boolean deleteSpecificValues)Specify whether to delete the entire range below the current maximum key value (false- the default), or the specifically generated values (true).-
Methods inherited from class org.springframework.jdbc.support.incrementer.AbstractColumnMaxValueIncrementer
afterPropertiesSet, getCacheSize, getColumnName, setCacheSize, setColumnName
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Methods inherited from class org.springframework.jdbc.support.incrementer.AbstractDataFieldMaxValueIncrementer
getDataSource, getIncrementerName, getPaddingLength, nextIntValue, nextLongValue, nextStringValue, setDataSource, setIncrementerName, setPaddingLength
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Constructor Detail
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AbstractIdentityColumnMaxValueIncrementer
public AbstractIdentityColumnMaxValueIncrementer()
Default constructor for bean property style usage.
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AbstractIdentityColumnMaxValueIncrementer
public AbstractIdentityColumnMaxValueIncrementer(javax.sql.DataSource dataSource, java.lang.String incrementerName, java.lang.String columnName)
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Method Detail
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setDeleteSpecificValues
public void setDeleteSpecificValues(boolean deleteSpecificValues)
Specify whether to delete the entire range below the current maximum key value (false- the default), or the specifically generated values (true). The former mode will use a where range clause whereas the latter will use an in clause starting with the lowest value minus 1, just preserving the maximum value.
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isDeleteSpecificValues
public boolean isDeleteSpecificValues()
Return whether to delete the entire range below the current maximum key value (false- the default), or the specifically generated values (true).
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getNextKey
protected long getNextKey() throws DataAccessExceptionDescription copied from class:AbstractDataFieldMaxValueIncrementerDetermine the next key to use, as a long.- Specified by:
getNextKeyin classAbstractDataFieldMaxValueIncrementer- Returns:
- the key to use as a long. It will eventually be converted later in another format by the public concrete methods of this class.
- Throws:
DataAccessException
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getIncrementStatement
protected abstract java.lang.String getIncrementStatement()
Statement to use to increment the "sequence" value.- Returns:
- the SQL statement to use
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getIdentityStatement
protected abstract java.lang.String getIdentityStatement()
Statement to use to obtain the current identity value.- Returns:
- the SQL statement to use
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getDeleteStatement
protected java.lang.String getDeleteStatement(long[] values)
Statement to use to clean up "sequence" values.The default implementation either deletes the entire range below the current maximum value, or the specifically generated values (starting with the lowest minus 1, just preserving the maximum value) - according to the
isDeleteSpecificValues()setting.- Parameters:
values- the currently generated key values (the number of values corresponds toAbstractColumnMaxValueIncrementer.getCacheSize())- Returns:
- the SQL statement to use
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