Package io.odysz.semantic

Class DASemantics.ShExtFilev2

java.lang.Object

io.odysz.semantic.DASemantics.SemanticHandler

io.odysz.semantic.DASemantics.ShExtFilev2

All Implemented Interfaces:

XMLTable.IMapValue

Enclosing class:

DASemantics

public static class DASemantics.ShExtFilev2
extends DASemantics.SemanticHandler

Note

For large file, use stream asynchronous mode, otherwise it's a performance problem here.

Whether uses or not a stream mode file up/down loading is a business tier decision by semantic-jserv. See Anclient.jave/album test for example.

This semantics won't process reading events. To load the file content at the field, use Funcall.extfile(String...).

Since:

1.4.40

Author:

odys-z@github.com

See Also:

• DASemantics.smtype.extFilev2

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ixExtRoot	Saving root. The path rooted from return of ISemantext.relativpath(String...).

Fields inherited from class io.odysz.semantic.DASemantics.SemanticHandler

args, delete, insert, pkField, post, sm, target, trxt, update, verbose

Constructor Summary

Constructors

Constructor	Description
ShExtFilev2(io.odysz.transact.sql.Transcxt trxt, String tabl, String pk, String[] args)

Method Summary

Modifier and Type	Method	Description
String	getFileRoot()
protected void	onDelete(io.odysz.semantics.ISemantext stx, io.odysz.transact.sql.Delete stmt, io.odysz.transact.sql.parts.condition.Condit condt, io.odysz.semantics.IUser usr)	Handle onDelete event.
protected void	onInsert(io.odysz.semantics.ISemantext stx, io.odysz.transact.sql.Insert insrt, ArrayList<Object[]> row, Map<String,Integer> cols, io.odysz.semantics.IUser usr)
protected void	onUpdate(io.odysz.semantics.ISemantext stx, io.odysz.transact.sql.Update updt, ArrayList<Object[]> row, Map<String,Integer> cols, io.odysz.semantics.IUser usr)	On updating external files' handler.
protected String	selectUri(io.odysz.semantics.ISemantext stx, io.odysz.transact.sql.Statement<?> stmt, io.odysz.transact.sql.parts.condition.Condit pk, io.odysz.semantics.IUser usr)

Methods inherited from class io.odysz.semantic.DASemantics.SemanticHandler

is, logi, mapKey, onPost

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

ixExtRoot

public static final int ixExtRoot

Saving root.
The path rooted from return of ISemantext.relativpath(String...).

See Also:

• Constant Field Values

Constructor Details

ShExtFilev2

public ShExtFilev2(io.odysz.transact.sql.Transcxt trxt,
 String tabl,
 String pk,
 String[] args)
            throws SemanticException

Throws:

SemanticException

Method Details

getFileRoot

public String getFileRoot()

onInsert

protected void onInsert(io.odysz.semantics.ISemantext stx,
 io.odysz.transact.sql.Insert insrt,
 ArrayList<Object[]> row,
 Map<String,Integer> cols,
 io.odysz.semantics.IUser usr)
                 throws SemanticException

Overrides:

onInsert in class DASemantics.SemanticHandler

Throws:

SemanticException

onUpdate

protected void onUpdate(io.odysz.semantics.ISemantext stx,
 io.odysz.transact.sql.Update updt,
 ArrayList<Object[]> row,
 Map<String,Integer> cols,
 io.odysz.semantics.IUser usr)
                 throws SemanticException

On updating external files' handler.

This method only moves the file with new uri & client name, applying the semantics predefined as:
AS all files are treated as binary file, no file can be modified, only delete then create it makes sense.

Client should avoid updating an external file while handling business logics.

NOTE:
This can be changed in the future.

Overrides:

onUpdate in class DASemantics.SemanticHandler

Throws:

SemanticException

See Also:

• DASemantics.SemanticHandler.onUpdate(ISemantext, Update, ArrayList, Map, IUser)

selectUri

protected String selectUri(io.odysz.semantics.ISemantext stx,
 io.odysz.transact.sql.Statement<?> stmt,
 io.odysz.transact.sql.parts.condition.Condit pk,
 io.odysz.semantics.IUser usr)
                    throws SemanticException

Throws:

SemanticException

onDelete

protected void onDelete(io.odysz.semantics.ISemantext stx,
 io.odysz.transact.sql.Delete stmt,
 io.odysz.transact.sql.parts.condition.Condit condt,
 io.odysz.semantics.IUser usr)
                 throws SemanticException

Description copied from class: DASemantics.SemanticHandler

Handle onDelete event.

Overrides:

onDelete in class DASemantics.SemanticHandler

condt - delete statement's condition.

Throws:

SemanticException