Schema (H2 Database Engine wt-1.0.1 API)

java.lang.Object
- org.h2.engine.DbObjectBase
- - org.h2.schema.Schema

所有已实现的接口:

DbObject
```
public class Schema
extends DbObjectBase
```
A schema as created by the SQL statement CREATE SCHEMA

字段概要
- 从类继承的字段 org.h2.engine.DbObjectBase
  comment, database, trace
- 从接口继承的字段 org.h2.engine.DbObject
  AGGREGATE, COMMENT, CONSTANT, CONSTRAINT, FUNCTION_ALIAS, INDEX, RIGHT, ROLE, SCHEMA, SEQUENCE, SETTING, TABLE_OR_VIEW, TRIGGER, USER, USER_DATATYPE

构造器概要

构造器
构造器和说明

Schema(Database database, int id, String schemaName, User owner, boolean system)
Create a new schema object.

构造器
构造器和说明
`Schema(Database database, int id, String schemaName, User owner, boolean system)` Create a new schema object.

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`void`	`add(SchemaObject obj)` Add an object to this schema.
`boolean`	`canDrop()` Check if this schema can be dropped.
`void`	`checkRename()` Check if this object can be renamed.
`Table`	`createTable(CreateTableData data)` Add a table to the schema.
`TableLink`	`createTableLink(int id, String tableName, String driver, String url, String user, String password, String originalSchema, String originalTable, boolean emitUpdates, boolean force)` Add a linked table to the schema.
`Constant`	`findConstant(String constantName)` Try to find a user defined constant with this name.
`Constraint`	`findConstraint(Session session, String name)` Try to find a constraint with this name.
`FunctionAlias`	`findFunction(String functionAlias)` Try to find a user defined function with this name.
`Index`	`findIndex(Session session, String name)` Try to find an index with this name.
`Sequence`	`findSequence(String sequenceName)` Try to find a sequence with this name.
`Table`	`findTableOrView(Session session, String name)` Try to find a table or view with this name.
`TriggerObject`	`findTrigger(String name)` Try to find a trigger with this name.
`void`	`freeUniqueName(String name)` Release a unique object name.
`ArrayList<SchemaObject>`	`getAll()` Get all objects.
`ArrayList<SchemaObject>`	`getAll(int type)` Get all objects of the given type.
`ArrayList<Table>`	`getAllTablesAndViews()` Get all tables and views.
`Constant`	`getConstant(String constantName)` Get the user defined constant with the given name.
`Constraint`	`getConstraint(String name)` Get the constraint with the given name.
`String`	`getCreateSQL()` Build a SQL statement to re-create this object.
`String`	`getCreateSQLForCopy(Table table, String quotedName)` Build a SQL statement to re-create the object, or to create a copy of the object with a different name or referencing a different table
`String`	`getDropSQL()` Build a SQL statement to drop this object.
`Index`	`getIndex(String name)` Get the index with the given name.
`User`	`getOwner()` Get the owner of this schema.
`Sequence`	`getSequence(String sequenceName)` Get the sequence with the given name.
`Table`	`getTableOrView(Session session, String name)` Get the table or view with the given name.
`Table`	`getTableOrViewByName(String name)` Get the table with the given name, if any.
`int`	`getType()` Get the object type.
`String`	`getUniqueConstraintName(Session session, Table table)` Create a unique constraint name.
`String`	`getUniqueIndexName(Session session, Table table, String prefix)` Create a unique index name.
`void`	`remove(SchemaObject obj)` Remove an object from this schema.
`void`	`removeChildrenAndResources(Session session)` Remove all dependent objects and free all resources (files, blocks in files) of this object.
`void`	`rename(SchemaObject obj, String newName)` Rename an object.

从类继承的方法 org.h2.engine.DbObjectBase
getChildren, getComment, getDatabase, getId, getModificationId, getName, getSQL, initDbObjectBase, invalidate, isTemporary, isValid, rename, setComment, setModified, setObjectName, setTemporary, toString

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 构造器详细资料
  - Schema
```
public Schema(Database database,
              int id,
              String schemaName,
              User owner,
              boolean system)
```
    Create a new schema object.
    
    参数:
    
    database - the database
    
    id - the object id
    
    schemaName - the schema name
    
    owner - the owner of the schema
    
    system - if this is a system schema (such a schema can not be dropped)
- 方法详细资料
  - canDrop
```
public boolean canDrop()
```
    Check if this schema can be dropped. System schemas can not be dropped.
    
    返回:
    
    true if it can be dropped
  - getCreateSQLForCopy
```
public String getCreateSQLForCopy(Table table,
                                  String quotedName)
```
    从接口复制的说明: DbObject
    
    Build a SQL statement to re-create the object, or to create a copy of the object with a different name or referencing a different table
    
    参数:
    
    table - the new table
    
    quotedName - the quoted name
    
    返回:
    
    the SQL statement
  - getDropSQL
```
public String getDropSQL()
```
    从类复制的说明: DbObjectBase
    
    Build a SQL statement to drop this object.
    
    指定者:
    
    getDropSQL 在接口中 DbObject
    
    指定者:
    
    getDropSQL 在类中 DbObjectBase
    
    返回:
    
    the SQL statement
  - getCreateSQL
```
public String getCreateSQL()
```
    从类复制的说明: DbObjectBase
    
    Build a SQL statement to re-create this object.
    
    指定者:
    
    getCreateSQL 在接口中 DbObject
    
    指定者:
    
    getCreateSQL 在类中 DbObjectBase
    
    返回:
    
    the SQL statement
  - getType
```
public int getType()
```
    从接口复制的说明: DbObject
    
    Get the object type.
    
    返回:
    
    the object type
  - removeChildrenAndResources
```
public void removeChildrenAndResources(Session session)
```
    从类复制的说明: DbObjectBase
    
    Remove all dependent objects and free all resources (files, blocks in files) of this object.
    
    指定者:
    
    removeChildrenAndResources 在接口中 DbObject
    
    指定者:
    
    removeChildrenAndResources 在类中 DbObjectBase
    
    参数:
    
    session - the session
  - checkRename
```
public void checkRename()
```
    从类复制的说明: DbObjectBase
    
    Check if this object can be renamed. System objects may not be renamed.
    
    指定者:
    
    checkRename 在接口中 DbObject
    
    指定者:
    
    checkRename 在类中 DbObjectBase
  - getOwner
```
public User getOwner()
```
    Get the owner of this schema.
    
    返回:
    
    the owner
  - add
```
public void add(SchemaObject obj)
```
    Add an object to this schema. This method must not be called within CreateSchemaObject; use Database.addSchemaObject() instead
    
    参数:
    
    obj - the object to add
  - rename
```
public void rename(SchemaObject obj,
                   String newName)
```
    Rename an object.
    
    参数:
    
    obj - the object to rename
    
    newName - the new name
  - findTableOrView
```
public Table findTableOrView(Session session,
                             String name)
```
    Try to find a table or view with this name. This method returns null if no object with this name exists. Local temporary tables are also returned.
    
    参数:
    
    session - the session
    
    name - the object name
    
    返回:
    
    the object or null
  - findIndex
```
public Index findIndex(Session session,
                       String name)
```
    Try to find an index with this name. This method returns null if no object with this name exists.
    
    参数:
    
    session - the session
    
    name - the object name
    
    返回:
    
    the object or null
  - findTrigger
```
public TriggerObject findTrigger(String name)
```
    Try to find a trigger with this name. This method returns null if no object with this name exists.
    
    参数:
    
    name - the object name
    
    返回:
    
    the object or null
  - findSequence
```
public Sequence findSequence(String sequenceName)
```
    Try to find a sequence with this name. This method returns null if no object with this name exists.
    
    参数:
    
    sequenceName - the object name
    
    返回:
    
    the object or null
  - findConstraint
```
public Constraint findConstraint(Session session,
                                 String name)
```
    Try to find a constraint with this name. This method returns null if no object with this name exists.
    
    参数:
    
    session - the session
    
    name - the object name
    
    返回:
    
    the object or null
  - findConstant
```
public Constant findConstant(String constantName)
```
    Try to find a user defined constant with this name. This method returns null if no object with this name exists.
    
    参数:
    
    constantName - the object name
    
    返回:
    
    the object or null
  - findFunction
```
public FunctionAlias findFunction(String functionAlias)
```
    Try to find a user defined function with this name. This method returns null if no object with this name exists.
    
    参数:
    
    functionAlias - the object name
    
    返回:
    
    the object or null
  - freeUniqueName
```
public void freeUniqueName(String name)
```
    Release a unique object name.
    
    参数:
    
    name - the object name
  - getUniqueConstraintName
```
public String getUniqueConstraintName(Session session,
                                      Table table)
```
    Create a unique constraint name.
    
    参数:
    
    session - the session
    
    table - the constraint table
    
    返回:
    
    the unique name
  - getUniqueIndexName
```
public String getUniqueIndexName(Session session,
                                 Table table,
                                 String prefix)
```
    Create a unique index name.
    
    参数:
    
    session - the session
    
    table - the indexed table
    
    prefix - the index name prefix
    
    返回:
    
    the unique name
  - getTableOrView
```
public Table getTableOrView(Session session,
                            String name)
```
    Get the table or view with the given name. Local temporary tables are also returned.
    
    参数:
    
    session - the session
    
    name - the table or view name
    
    返回:
    
    the table or view
    
    抛出:
    
    DbException - if no such object exists
  - getIndex
```
public Index getIndex(String name)
```
    Get the index with the given name.
    
    参数:
    
    name - the index name
    
    返回:
    
    the index
    
    抛出:
    
    DbException - if no such object exists
  - getConstraint
```
public Constraint getConstraint(String name)
```
    Get the constraint with the given name.
    
    参数:
    
    name - the constraint name
    
    返回:
    
    the constraint
    
    抛出:
    
    DbException - if no such object exists
  - getConstant
```
public Constant getConstant(String constantName)
```
    Get the user defined constant with the given name.
    
    参数:
    
    constantName - the constant name
    
    返回:
    
    the constant
    
    抛出:
    
    DbException - if no such object exists
  - getSequence
```
public Sequence getSequence(String sequenceName)
```
    Get the sequence with the given name.
    
    参数:
    
    sequenceName - the sequence name
    
    返回:
    
    the sequence
    
    抛出:
    
    DbException - if no such object exists
  - getAll
```
public ArrayList<SchemaObject> getAll()
```
    Get all objects.
    
    返回:
    
    a (possible empty) list of all objects
  - getAll
```
public ArrayList<SchemaObject> getAll(int type)
```
    Get all objects of the given type.
    
    参数:
    
    type - the object type
    
    返回:
    
    a (possible empty) list of all objects
  - getAllTablesAndViews
```
public ArrayList<Table> getAllTablesAndViews()
```
    Get all tables and views.
    
    返回:
    
    a (possible empty) list of all objects
  - getTableOrViewByName
```
public Table getTableOrViewByName(String name)
```
    Get the table with the given name, if any.
    
    参数:
    
    name - the table name
    
    返回:
    
    the table or null if not found
  - remove
```
public void remove(SchemaObject obj)
```
    Remove an object from this schema.
    
    参数:
    
    obj - the object to remove
  - createTable
```
public Table createTable(CreateTableData data)
```
    Add a table to the schema.
    
    参数:
    
    data - the create table information
    
    返回:
    
    the created Table object
  - createTableLink
```
public TableLink createTableLink(int id,
                                 String tableName,
                                 String driver,
                                 String url,
                                 String user,
                                 String password,
                                 String originalSchema,
                                 String originalTable,
                                 boolean emitUpdates,
                                 boolean force)
```
    Add a linked table to the schema.
    
    参数:
    
    id - the object id
    
    tableName - the table name of the alias
    
    driver - the driver class name
    
    url - the database URL
    
    user - the user name
    
    password - the password
    
    originalSchema - the schema name of the target table
    
    originalTable - the table name of the target table
    
    emitUpdates - if updates should be emitted instead of delete/insert
    
    force - create the object even if the database can not be accessed
    
    返回:
    
    the TableLink object

类 Schema

字段概要

从类继承的字段 org.h2.engine.DbObjectBase

从接口继承的字段 org.h2.engine.DbObject

构造器概要

方法概要

从类继承的方法 org.h2.engine.DbObjectBase

从类继承的方法 java.lang.Object

构造器详细资料

Schema

方法详细资料

canDrop

getCreateSQLForCopy

getDropSQL

getCreateSQL

getType

removeChildrenAndResources

checkRename

getOwner

add

rename

findTableOrView

findIndex

findTrigger

findSequence

findConstraint

findConstant

findFunction

freeUniqueName

getUniqueConstraintName

getUniqueIndexName

getTableOrView

getIndex

getConstraint

getConstant

getSequence

getAll

getAll

getAllTablesAndViews

getTableOrViewByName

remove

createTable

createTableLink