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EclipseLink 1.1.0_ 1.1.0.r3634 API Reference | |||||||||
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java.lang.Objectorg.eclipse.persistence.descriptors.FieldsLockingPolicy
org.eclipse.persistence.descriptors.SelectedFieldsLockingPolicy
public class SelectedFieldsLockingPolicy
Purpose: An implementation of the OptimisticLockingPolicy interface. This policy compares selected fields in the WHERE clause when doing an update or a delete. If any field has been changed, an optimistic locking exception will be thrown. Note that the fields specified must be mapped and not be primary keys.
NOTE: This policy can only be used inside a unit of work.
| Field Summary | |
|---|---|
protected java.util.Vector |
lockFields
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protected java.util.Map |
lockFieldsByTable
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| Fields inherited from class org.eclipse.persistence.descriptors.FieldsLockingPolicy |
|---|
allNonPrimaryKeyFields, descriptor |
| Constructor Summary | |
|---|---|
SelectedFieldsLockingPolicy()
PUBLIC: Create a new selected fields locking policy. |
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| Method Summary | |
|---|---|
void |
addLockFieldName(java.lang.String fieldName)
PUBLIC: Add a fieldname to lock on. |
void |
addLockValuesToTranslationRow(ObjectLevelModifyQuery query)
INTERNAL: Values to be included in the locking mechanism are added to the translation row. |
protected java.util.Vector |
getFieldsToCompare(org.eclipse.persistence.internal.helper.DatabaseTable table,
org.eclipse.persistence.internal.sessions.AbstractRecord transRow,
org.eclipse.persistence.internal.sessions.AbstractRecord modifyRow)
INTERNAL: returns the lock fields to compare based on the passed in table. |
java.util.Vector |
getLockFields()
INTERNAL: Returns the lock fields |
protected java.util.Vector |
getLockFields(org.eclipse.persistence.internal.helper.DatabaseTable table)
INTERNAL: returns the lock fields based on the passed in table |
protected java.util.Map |
getLockFieldsByTable()
INTERNAL: returns the lock fields |
void |
initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
INTERNAL: It is responsible for initializing the policy; |
void |
setLockFieldNames(java.util.Vector lockFieldNames)
PUBLIC: Set the field names to lock on. |
void |
setLockFields(java.util.Map lockFieldsByTable)
INTERNAL: Used to set the field names to be used in this policy. |
protected void |
setLockFields(java.util.Vector lockFields)
INTERNAL: Sets the lock fields |
protected void |
setLockFieldsByTable(java.util.Map lockFieldsByTable)
INTERNAL: Used to set the field names to be used in this policy. |
| Methods inherited from class java.lang.Object |
|---|
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected java.util.Map lockFieldsByTable
protected java.util.Vector lockFields
| Constructor Detail |
|---|
public SelectedFieldsLockingPolicy()
| Method Detail |
|---|
public void addLockFieldName(java.lang.String fieldName)
public void addLockValuesToTranslationRow(ObjectLevelModifyQuery query)
throws DatabaseException
addLockValuesToTranslationRow in interface org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicyaddLockValuesToTranslationRow in class FieldsLockingPolicyDatabaseException
protected java.util.Vector getFieldsToCompare(org.eclipse.persistence.internal.helper.DatabaseTable table,
org.eclipse.persistence.internal.sessions.AbstractRecord transRow,
org.eclipse.persistence.internal.sessions.AbstractRecord modifyRow)
getFieldsToCompare in class FieldsLockingPolicypublic java.util.Vector getLockFields()
protected java.util.Vector getLockFields(org.eclipse.persistence.internal.helper.DatabaseTable table)
protected java.util.Map getLockFieldsByTable()
public void initialize(org.eclipse.persistence.internal.sessions.AbstractSession session)
initialize in interface org.eclipse.persistence.internal.descriptors.OptimisticLockingPolicyinitialize in class FieldsLockingPolicypublic void setLockFieldNames(java.util.Vector lockFieldNames)
public void setLockFields(java.util.Map lockFieldsByTable)
protected void setLockFields(java.util.Vector lockFields)
protected void setLockFieldsByTable(java.util.Map lockFieldsByTable)
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