org.basex.query.up.primitives

Enum PrimitiveType

java.lang.Object

java.lang.Enum<PrimitiveType>

org.basex.query.up.primitives.PrimitiveType

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<PrimitiveType>

public enum PrimitiveType
extends java.lang.Enum<PrimitiveType>

Update primitive type enumeration.

The type order corresponds to the order updates are carried out node-wise. The XQuery Update Facility specification proposes the following order:

• INSERTINTO, INSERTATTR, REPLACEVALUE, RENAMENODE
• INSERTBEFORE, INSERTAFTER, INSERTINTOFIRST, INSERTINTOLAST
• REPLACENODE
• REPLACEELEMCONT
• DELETE
• PUT

Why does it differ from the specification?

We apply the order to each single target node instead of a document (like stated in the specification). The result stays the same.

Put is executed before replace, delete and insert before as the node to be serialized has already been updated and applying replace, delete or insert before would change its pre value or kill its identity.

For all other operations, concerning the order the following rule applies: Updates are applied from bottom to top regarding the data table. This means the update primitive which affects the highest pre value comes first, etc.

'Insert into as last' is carried out after 'insert into' as we have to make sure that location modifiers are correctly applied.

'Replace element content' must be executed after 'insert into as first' to replace nodes inserted by 'insert into as first'.

The following list shows the affected pre value for each primitive type relative to its target node pre value P. An 'S' in the first column means that the corresponding primitive could lead to structural changes of the table -> a shift of pre values.

P: target pre value
S: may lead to structural change
size(), attSize() -> see Data

 Primitive                   Affected Pre
 ----------------------------------------
 S  insert after             P + size(P)
 S  insert into              P + size(P)
 S  insert into as last      P + size(P)
 S  insert attribute         P + attSize(P)
 S  insert into as first     P + attSize(P)
 S  replace elm content      P + attSize(P) //attributes not affected
 S  replace value            P              //inserting empty txt node -> S
    rename                   P
    put                      P
 S  replace                  P
 S  delete                   P
 S  insert before            P
 

Author:

BaseX Team 2005-12, BSD License, Lukas Kircher

Enum Constant Summary

Enum Constants

Enum Constant and Description
DBDELETE DBDelete.
DBOPTIMIZE DBOptimize.
DBRENAME DBRename.
DBSTORE DBSTORE.
DELETENODE Delete.
INSERTAFTER Insert after.
INSERTATTR Insert attribute.
INSERTBEFORE Insert before.
INSERTINTO Insert into.
INSERTINTOFIRST Insert into as first.
INSERTINTOLAST Insert into as last.
PUT Put.
RENAMENODE Rename.
REPLACEELEMCONT Replace element content.
REPLACENODE Replace node.
REPLACEVALUE Replace value.

Method Summary

Methods

Modifier and Type	Method and Description
static PrimitiveType	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static PrimitiveType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

INSERTAFTER

public static final PrimitiveType INSERTAFTER

Insert after.

INSERTINTO

public static final PrimitiveType INSERTINTO

Insert into.

INSERTINTOLAST

public static final PrimitiveType INSERTINTOLAST

Insert into as last.

INSERTATTR

public static final PrimitiveType INSERTATTR

Insert attribute.

INSERTINTOFIRST

public static final PrimitiveType INSERTINTOFIRST

Insert into as first.

REPLACEELEMCONT

public static final PrimitiveType REPLACEELEMCONT

Replace element content.

REPLACEVALUE

public static final PrimitiveType REPLACEVALUE

Replace value.

RENAMENODE

public static final PrimitiveType RENAMENODE

Rename.

PUT

public static final PrimitiveType PUT

Put.

REPLACENODE

public static final PrimitiveType REPLACENODE

Replace node.

DELETENODE

public static final PrimitiveType DELETENODE

Delete.

INSERTBEFORE

public static final PrimitiveType INSERTBEFORE

Insert before.

DBSTORE

public static final PrimitiveType DBSTORE

DBSTORE.

DBRENAME

public static final PrimitiveType DBRENAME

DBRename.

DBDELETE

public static final PrimitiveType DBDELETE

DBDelete.

DBOPTIMIZE

public static final PrimitiveType DBOPTIMIZE

DBOptimize.

Method Detail

values

public static PrimitiveType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (PrimitiveType c : PrimitiveType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static PrimitiveType valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null