java.lang.Object
- org.apache.derby.iapi.sql.dictionary.TupleDescriptor
- - org.apache.derby.iapi.sql.dictionary.UniqueTupleDescriptor
  - - org.apache.derby.iapi.sql.dictionary.ViewDescriptor

All Implemented Interfaces:

Dependable, Dependent, Provider
```
public final class ViewDescriptor
extends UniqueTupleDescriptor
implements Dependent, Provider
```
This is the implementation of ViewDescriptor. Users of View descriptors should only use the following methods:
1. getUUID
2. setUUID
3. getViewText
4. setViewName
5. getCheckOptionType
6. getCompSchemaId
Version:

0.1

Field Summary

Fields
Modifier and Type	Field	Description
`private int`	`checkOption`
`private UUID`	`compSchemaId`
`static int`	`NO_CHECK_OPTION`
`private UUID`	`uuid`
`private java.lang.String`	`viewName`
`private java.lang.String`	`viewText`

Fields inherited from interface org.apache.derby.catalog.Dependable
ACTIVATION, ALIAS, COLUMNS_IN_TABLE, COLUMNS_PERMISSION, CONGLOMERATE, CONSTRAINT, DEFAULT, FILE, HEAP, INDEX, PERM, PREPARED_STATEMENT, ROLE_GRANT, ROUTINE_PERMISSION, SCHEMA, SEQUENCE, STORED_PREPARED_STATEMENT, TABLE, TABLE_PERMISSION, TRIGGER, VIEW

Constructor Summary

Constructors
Constructor	Description
`ViewDescriptor(DataDictionary dataDictionary, UUID viewID, java.lang.String viewName, java.lang.String viewText, int checkOption, UUID compSchemaId)`	Constructor for a ViewDescriptor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`drop(LanguageConnectionContext lcc, SchemaDescriptor sd, TableDescriptor td)`	Drop this descriptor, if not already done.
`private void`	`drop(LanguageConnectionContext lcc, SchemaDescriptor sd, TableDescriptor td, int action)`	Drop this descriptor, if not already done, due to action.
`int`	`getCheckOptionType()`	Gets an identifier telling what type of check option is on this view.
`java.lang.String`	`getClassType()`	Get the provider's type.
`UUID`	`getCompSchemaId()`	Get the compilation type schema id when this view was first bound.
`DependableFinder`	`getDependableFinder()`	Get an object which can be written to disk and which, when read from disk, will find or reconstruct this in-memory Dependable.
`java.lang.String`	`getName()`
`UUID`	`getObjectID()`	Get the provider's UUID
`java.lang.String`	`getObjectName()`	Return the name of this Provider.
`UUID`	`getUUID()`	Gets the UUID of the view.
`java.lang.String`	`getViewText()`	Gets the text of the view definition.
`boolean`	`isValid()`	Check that all of the dependent's dependencies are valid.
`void`	`makeInvalid(int action, LanguageConnectionContext lcc)`	Mark the dependent as invalid (due to at least one of its dependencies being invalid).
`void`	`prepareToInvalidate(Provider p, int action, LanguageConnectionContext lcc)`	Prepare to mark the dependent as invalid (due to at least one of its dependencies being invalid).
`void`	`setUUID(UUID uuid)`	Sets the UUID of the view.
`void`	`setViewName(java.lang.String name)`	Sets the name of the view.
`java.lang.String`	`toString()`	Prints the contents of the ViewDescriptor

Methods inherited from class org.apache.derby.iapi.sql.dictionary.TupleDescriptor
getColumnDependableFinder, getDataDictionary, getDependableFinder, getDescriptorName, getDescriptorType, isPersistent, setDataDictionary

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.derby.catalog.Dependable
isPersistent

- Field Detail
  - checkOption
```
private final int checkOption
```
  - viewName
```
private java.lang.String viewName
```
  - viewText
```
private final java.lang.String viewText
```
  - uuid
```
private UUID uuid
```
  - compSchemaId
```
private final UUID compSchemaId
```
  - NO_CHECK_OPTION
```
public static final int NO_CHECK_OPTION
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - ViewDescriptor
```
public ViewDescriptor(DataDictionary dataDictionary,
                      UUID viewID,
                      java.lang.String viewName,
                      java.lang.String viewText,
                      int checkOption,
                      UUID compSchemaId)
```
    Constructor for a ViewDescriptor.
    
    Parameters:
    
    dataDictionary - The data dictionary that this descriptor lives in
    
    viewID - The UUID for the view
    
    viewName - The name of the view
    
    viewText - The text of the query expression from the view definition.
    
    checkOption - int check option type
    
    compSchemaId - the schemaid to compile in
- Method Detail
  - getUUID
```
public UUID getUUID()
```
    Gets the UUID of the view.
    
    Specified by:
    
    getUUID in class UniqueTupleDescriptor
    
    Returns:
    
    The UUID of the view.
  - setUUID
```
public void setUUID(UUID uuid)
```
    Sets the UUID of the view.
    
    Parameters:
    
    uuid - The UUID of the view.
  - getViewText
```
public java.lang.String getViewText()
```
    Gets the text of the view definition.
    
    Returns:
    
    A String containing the text of the CREATE VIEW statement that created the view
  - setViewName
```
public void setViewName(java.lang.String name)
```
    Sets the name of the view.
    
    Parameters:
    
    name - The name of the view.
  - getCheckOptionType
```
public int getCheckOptionType()
```
    Gets an identifier telling what type of check option is on this view.
    
    Returns:
    
    An identifier telling what type of check option is on the view.
  - getCompSchemaId
```
public UUID getCompSchemaId()
```
    Get the compilation type schema id when this view was first bound.
    
    Returns:
    
    the schema UUID
  - getDependableFinder
```
public DependableFinder getDependableFinder()
```
    Description copied from interface: Dependable
    
    Get an object which can be written to disk and which, when read from disk, will find or reconstruct this in-memory Dependable.
    
    Specified by:
    
    getDependableFinder in interface Dependable
    
    Returns:
    
    the stored form of this provider
    
    See Also:
    
    Dependable.getDependableFinder()
  - getObjectName
```
public java.lang.String getObjectName()
```
    Return the name of this Provider. (Useful for errors.)
    
    Specified by:
    
    getObjectName in interface Dependable
    
    Returns:
    
    String The name of this provider.
  - getObjectID
```
public UUID getObjectID()
```
    Get the provider's UUID
    
    Specified by:
    
    getObjectID in interface Dependable
    
    Returns:
    
    String The provider's UUID
  - getClassType
```
public java.lang.String getClassType()
```
    Get the provider's type.
    
    Specified by:
    
    getClassType in interface Dependable
    
    Returns:
    
    String The provider's type.
  - isValid
```
public boolean isValid()
```
    Check that all of the dependent's dependencies are valid.
    
    Specified by:
    
    isValid in interface Dependent
    
    Returns:
    
    true if the dependent is currently valid
  - prepareToInvalidate
```
public void prepareToInvalidate(Provider p,
                                int action,
                                LanguageConnectionContext lcc)
                         throws StandardException
```
    Prepare to mark the dependent as invalid (due to at least one of its dependencies being invalid).
    
    Specified by:
    
    prepareToInvalidate in interface Dependent
    
    Parameters:
    
    action - The action causing the invalidation
    
    p - the provider
    
    lcc - The LanguageConnectionContext
    
    Throws:
    
    StandardException - thrown if unable to make it invalid
  - makeInvalid
```
public void makeInvalid(int action,
                        LanguageConnectionContext lcc)
                 throws StandardException
```
    Mark the dependent as invalid (due to at least one of its dependencies being invalid).
    
    Specified by:
    
    makeInvalid in interface Dependent
    
    Parameters:
    
    action - The action causing the invalidation
    
    lcc - The LanguageConnectionContext
    
    Throws:
    
    StandardException - thrown if unable to make it invalid
  - toString
```
public java.lang.String toString()
```
    Prints the contents of the ViewDescriptor
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    The contents as a String
  - drop
```
public void drop(LanguageConnectionContext lcc,
                 SchemaDescriptor sd,
                 TableDescriptor td)
          throws StandardException
```
    Drop this descriptor, if not already done.
    
    Parameters:
    
    lcc - current language connection context
    
    sd - schema descriptor
    
    td - table descriptor for this view
    
    Throws:
    
    StandardException - standard error policy
  - drop
```
private void drop(LanguageConnectionContext lcc,
                  SchemaDescriptor sd,
                  TableDescriptor td,
                  int action)
           throws StandardException
```
    Drop this descriptor, if not already done, due to action. If action is not DependencyManager.DROP_VIEW, the descriptor is dropped due to dropping some other object, e.g. a table column.
    
    Parameters:
    
    lcc - current language connection context
    
    sd - schema descriptor
    
    td - table descriptor for this view
    
    action - action
    
    Throws:
    
    StandardException - standard error policy
  - getName
```
public java.lang.String getName()
```

Class ViewDescriptor

Field Summary

Fields inherited from interface org.apache.derby.catalog.Dependable

Constructor Summary

Method Summary

Methods inherited from class org.apache.derby.iapi.sql.dictionary.TupleDescriptor

Methods inherited from class java.lang.Object

Methods inherited from interface org.apache.derby.catalog.Dependable

Field Detail

checkOption

viewName

viewText

uuid

compSchemaId

NO_CHECK_OPTION

Constructor Detail

ViewDescriptor

Method Detail

getUUID

setUUID

getViewText

setViewName

getCheckOptionType

getCompSchemaId

getDependableFinder

getObjectName

getObjectID

getClassType

isValid

prepareToInvalidate

makeInvalid

toString

drop

drop

getName