Package org.apache.torque.adapter
Klasse PostgresAdapter
java.lang.Object
org.apache.torque.adapter.AbstractAdapter
org.apache.torque.adapter.PostgresAdapter
- Alle implementierten Schnittstellen:
Serializable
,Adapter
This is used to connect to PostgresQL databases.
http://www.postgresql.org/
- Version:
- $Id: PostgresAdapter.java 1848527 2018-12-09 16:27:22Z tv $
- Autor:
- Hakan Tandogan, Henning P. Schmiedehausen
- Siehe auch:
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Feldübersicht
Von Schnittstelle geerbte Felder org.apache.torque.adapter.Adapter
ADAPTER_KEY, AUTODETECT_ADAPTER, DRIVER_KEY
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Konstruktorübersicht
Konstruktoren -
Methodenübersicht
Modifizierer und TypMethodeBeschreibungvoid
generateLimits
(Query query, long offset, int limit) Generate a LIMIT limit OFFSET offset clause if offset > 0 or an LIMIT limit clause if limit is > 0 and offset is 0.getIDMethodSQL
(Object name) Returns SQL used to get the most recently inserted primary key.Returns the constant from theIDMethod
interface denoting which type of primary key generation method this type of RDBMS uses.ignoreCase
(String in) This method is used to ignore case.void
lockTable
(Connection con, String table) Locks the specified table.toUpperCase
(String in) This method is used to ignore case.void
unlockTable
(Connection con, String table) Unlocks the specified table.boolean
useIlike()
Whether ILIKE should be used for case insensitive like clauses.Von Klasse geerbte Methoden org.apache.torque.adapter.AbstractAdapter
escapeText, getStringDelimiter, getUpdateLockClause, ignoreCaseInOrderBy, setCapabilities, supportsNativeLimit, supportsNativeOffset, useEscapeClauseForLike, useGetGeneratedKeys, useMinusForExcept
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Konstruktordetails
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PostgresAdapter
protected PostgresAdapter()Empty constructor.
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Methodendetails
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toUpperCase
This method is used to ignore case.- Angegeben von:
toUpperCase
in SchnittstelleAdapter
- Angegeben von:
toUpperCase
in KlasseAbstractAdapter
- Parameter:
in
- The string to transform to upper case.- Gibt zurück:
- The upper case string.
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ignoreCase
This method is used to ignore case.- Angegeben von:
ignoreCase
in SchnittstelleAdapter
- Angegeben von:
ignoreCase
in KlasseAbstractAdapter
- Parameter:
in
- The string whose case to ignore.- Gibt zurück:
- The string in a case that can be ignored.
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getIDMethodType
Beschreibung aus Klasse kopiert:AbstractAdapter
Returns the constant from theIDMethod
interface denoting which type of primary key generation method this type of RDBMS uses.- Angegeben von:
getIDMethodType
in SchnittstelleAdapter
- Angegeben von:
getIDMethodType
in KlasseAbstractAdapter
- Gibt zurück:
- IDMethod constant
- Siehe auch:
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getIDMethodSQL
Beschreibung aus Klasse kopiert:AbstractAdapter
Returns SQL used to get the most recently inserted primary key. Databases which have no support for this returnnull
.- Angegeben von:
getIDMethodSQL
in SchnittstelleAdapter
- Angegeben von:
getIDMethodSQL
in KlasseAbstractAdapter
- Parameter:
name
- The name of the field (should be of typeString
).- Gibt zurück:
- SQL to retreive the next database key.
- Siehe auch:
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lockTable
Locks the specified table.- Angegeben von:
lockTable
in SchnittstelleAdapter
- Angegeben von:
lockTable
in KlasseAbstractAdapter
- Parameter:
con
- The JDBC connection to use.table
- The name of the table to lock.- Löst aus:
SQLException
- No Statement could be created or executed.
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unlockTable
Unlocks the specified table.- Angegeben von:
unlockTable
in SchnittstelleAdapter
- Angegeben von:
unlockTable
in KlasseAbstractAdapter
- Parameter:
con
- The JDBC connection to use.table
- The name of the table to unlock.- Löst aus:
SQLException
- No Statement could be created or executed.
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generateLimits
Generate a LIMIT limit OFFSET offset clause if offset > 0 or an LIMIT limit clause if limit is > 0 and offset is 0.- Angegeben von:
generateLimits
in SchnittstelleAdapter
- Setzt außer Kraft:
generateLimits
in KlasseAbstractAdapter
- Parameter:
query
- The query to modifyoffset
- the offset Valuelimit
- the limit Value
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useIlike
public boolean useIlike()Whether ILIKE should be used for case insensitive like clauses. As postgres uses ILIKE, this mimplementation returns true.- Angegeben von:
useIlike
in SchnittstelleAdapter
- Setzt außer Kraft:
useIlike
in KlasseAbstractAdapter
- Gibt zurück:
- true if ilike should be used for case insensitive likes, false if ignoreCase should be applied to the compared strings.
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