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java.lang.Objectorg.apache.torque.adapter.AbstractAdapter
org.apache.torque.adapter.OracleAdapter
public class OracleAdapter
This code should be used for an Oracle database pool.
| Field Summary |
|---|
| Fields inherited from interface org.apache.torque.adapter.Adapter |
|---|
ADAPTER_KEY, AUTODETECT_ADAPTER, DRIVER_KEY |
| Constructor Summary | |
|---|---|
protected |
OracleAdapter()
Empty constructor. |
| Method Summary | |
|---|---|
boolean |
escapeText()
This method is for the SqlExpression.quoteAndEscape rules. |
void |
generateLimits(Query query,
long offset,
int limit)
Build Oracle-style query with limit or offset. |
String |
getIDMethodSQL(Object sequenceName)
Returns the next key from a sequence. |
IDMethod |
getIDMethodType()
Returns the constant from the IDMethod interface denoting which
type of primary key generation method this type of RDBMS uses. |
String |
ignoreCase(String in)
This method is used to ignore case. |
void |
lockTable(Connection con,
String table)
Locks the specified table. |
boolean |
supportsNativeLimit()
Return true for Oracle |
boolean |
supportsNativeOffset()
Return true for Oracle |
String |
toUpperCase(String in)
This method is used to ignore case. |
void |
unlockTable(Connection con,
String table)
Unlocks the specified table. |
boolean |
useEscapeClauseForLike()
Whether an escape clause in like should be used. |
| Methods inherited from class org.apache.torque.adapter.AbstractAdapter |
|---|
getStringDelimiter, getUpdateLockClause, ignoreCaseInOrderBy, useIlike |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
protected OracleAdapter()
| Method Detail |
|---|
public String toUpperCase(String in)
toUpperCase in interface AdaptertoUpperCase in class AbstractAdapterin - The string to transform to upper case.
public String ignoreCase(String in)
ignoreCase in interface AdapterignoreCase in class AbstractAdapterin - The string whose case to ignore.
public IDMethod getIDMethodType()
AbstractAdapterIDMethod interface denoting which
type of primary key generation method this type of RDBMS uses.
getIDMethodType in interface AdaptergetIDMethodType in class AbstractAdapterAdapter.getIDMethodType()public String getIDMethodSQL(Object sequenceName)
select sequenceName.nextval from dual
getIDMethodSQL in interface AdaptergetIDMethodSQL in class AbstractAdaptersequenceName - The name of the sequence (should be of type
String).
Adapter.getIDMethodSQL(Object)
public void lockTable(Connection con,
String table)
throws SQLException
lockTable in interface AdapterlockTable in class AbstractAdaptercon - The JDBC connection to use.table - The name of the table to lock.
SQLException - No Statement could be created or executed.
public void unlockTable(Connection con,
String table)
throws SQLException
unlockTable in interface AdapterunlockTable in class AbstractAdaptercon - The JDBC connection to use.table - The name of the table to unlock.
SQLException - No Statement could be created or executed.public boolean supportsNativeLimit()
supportsNativeLimit in interface AdaptersupportsNativeLimit in class AbstractAdapterAbstractAdapter.supportsNativeLimit()public boolean supportsNativeOffset()
supportsNativeOffset in interface AdaptersupportsNativeOffset in class AbstractAdapterAbstractAdapter.supportsNativeOffset()
public void generateLimits(Query query,
long offset,
int limit)
SELECT B.* FROM (
SELECT A.*, rownum as TORQUE$ROWNUM FROM (
query
) A
) B WHERE B.TORQUE$ROWNUM > offset AND B.TORQUE$ROWNUM
<= offset + limit
generateLimits in interface AdaptergenerateLimits in class AbstractAdapterquery - The query to modifyoffset - the offset Valuelimit - the limit Valuepublic boolean escapeText()
escapeText in interface AdapterescapeText in class AbstractAdapterpublic boolean useEscapeClauseForLike()
true.
useEscapeClauseForLike in interface AdapteruseEscapeClauseForLike in class AbstractAdapter
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