Package com.mckoi.database
Class ViewManager
java.lang.Object
com.mckoi.database.ViewManager
A DatabaseConnection view manager. This controls adding, updating, deleting,
and processing views inside the system view table.
- Author:
- Tobias Downer
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Method Summary
Modifier and TypeMethodDescriptioncreateViewQueryPlanNode
(TableName view_name) Returns a freshly deserialized QueryPlanNode object for the given view object.void
defineView
(ViewDef view, SQLQuery query, User user) Defines a view.boolean
deleteView
(TableName view_name) Deletes the view with the given name, or returns false if no entries were deleted from the view table.boolean
viewExists
(TableName view_name) Returns true if the view with the given name exists.
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Method Details
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viewExists
Returns true if the view with the given name exists. -
defineView
Defines a view. If the view with the name has not been defined it is defined. If the view has been defined then it is overwritten with this information.- Parameters:
view
- information that defines the view.query
- the query that forms the view.user
- the user that owns this view being defined.- Throws:
DatabaseException
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deleteView
Deletes the view with the given name, or returns false if no entries were deleted from the view table.- Throws:
DatabaseException
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createViewQueryPlanNode
Returns a freshly deserialized QueryPlanNode object for the given view object.
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