h2-1.4.197.jar
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com.h2database:h2:1.4.197
META-INF
org
h2
jdbc
message
expression
engine
upgrade
Driver.java
security
fulltext
api
compress
index
table
SubQueryInfo.java
FunctionTable.java
TableView.java
ColumnResolver.java
PlanItem.java
Table.java
MetaTable.java
LinkSchema.java
RangeTable.java
IndexColumn.java
TableSynonym.java
SingleColumnResolver.java
TableBase.java
IndexHints.java
Column.java
TableLink.java
RegularTable.java
TableLinkConnection.java
Plan.java
JoinBatch.java
TableType.java
TableFilter.java
constraint
store
util
bnf
command
tools
server
mode
jdbcx
result
JdbcDriverBackwardsCompat.java
jmx
value
schema
mvstore
TableSynonym.java
清空
类结构
/* * Copyright 2004-2018 H2 Group. Multiple-Licensed under the MPL 2.0, * and the EPL 1.0 (http://h2database.com/html/license.html). * Initial Developer: H2 Group */ package org.h2.table; import org.h2.command.ddl.
CreateSynonymData
; import org.h2.engine.
Session
; import org.h2.message.
DbException
; import org.h2.message.
Trace
; import org.h2.schema.
Schema
; import org.h2.schema.
SchemaObjectBase
; /** * Synonym for an existing table or view. All DML requests are forwarded to the backing table. * Adding indices to a synonym or altering the table is not supported. */ public class
TableSynonym
extends
SchemaObjectBase
{ private
CreateSynonymData
data
; /** * The table the synonym is created for. */ private
Table
synonymFor
; public
TableSynonym
(
CreateSynonymData
data
) {
initSchemaObjectBase
(
data
.
schema
,
data
.
id
,
data
.
synonymName
,
Trace
.
TABLE
); this.
data
=
data
; } /** * @return the table this is a synonym for */ public
Table
getSynonymFor
() { return
synonymFor
; } /** * Set (update) the data. * * @param data the new data */ public void
updateData
(
CreateSynonymData
data
) { this.
data
=
data
; } @
Override
public int
getType
() { return
SYNONYM
; } @
Override
public
String
getCreateSQLForCopy
(
Table
table
,
String
quotedName
) { return
synonymFor
.
getCreateSQLForCopy
(
table
,
quotedName
); } @
Override
public void
rename
(
String
newName
) { throw
DbException
.
getUnsupportedException
("SYNONYM"); } @
Override
public void
removeChildrenAndResources
(
Session
session
) {
synonymFor
.
removeSynonym
(this);
database
.
removeMeta
(
session
,
getId
()); } @
Override
public
String
getCreateSQL
() { return "CREATE SYNONYM " +
getName
() + " FOR " +
data
.
synonymForSchema
.
getName
() + "." +
data
.
synonymFor
; } @
Override
public
String
getDropSQL
() { return "DROP SYNONYM " +
getName
(); } @
Override
public void
checkRename
() { throw
DbException
.
getUnsupportedException
("SYNONYM"); } /** * @return the table this synonym is for */ public
String
getSynonymForName
() { return
data
.
synonymFor
; } /** * @return the schema this synonym is for */ public
Schema
getSynonymForSchema
() { return
data
.
synonymForSchema
; } /** * @return true if this synonym currently points to a real table */ public boolean
isInvalid
() { return
synonymFor
.
isValid
(); } /** * Update the table that this is a synonym for, to know about this synonym. */ public void
updateSynonymFor
() { if (
synonymFor
!= null) {
synonymFor
.
removeSynonym
(this); }
synonymFor
=
data
.
synonymForSchema
.
getTableOrView
(
data
.
session
,
data
.
synonymFor
);
synonymFor
.
addSynonym
(this); } }
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