Package com.mckoi.database
Class DatabaseQueryContext
- java.lang.Object
-
- com.mckoi.database.AbstractQueryContext
-
- com.mckoi.database.DatabaseQueryContext
-
- All Implemented Interfaces:
QueryContext
public class DatabaseQueryContext extends AbstractQueryContext
An implementation of a QueryContext based on a DatabaseConnection object.- Author:
- Tobias Downer
-
-
Constructor Summary
Constructors Constructor Description DatabaseQueryContext(DatabaseConnection database)
Constructs the QueryContext.
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description QueryPlanNode
createViewQueryPlanNode(TableName name)
Creates a QueryPlanNode for the view with the given name.long
currentSequenceValue(java.lang.String name)
Returns the current sequence value returned for the given sequence generator within the connection defined by this context.Database
getDatabase()
Returns the Database object that this context is a child of.DataTableDef
getDataTableDef(TableName name)
Returns a DataTableDef for the given table name.FunctionLookup
getFunctionLookup()
Returns the system FunctionLookup object.GrantManager
getGrantManager()
Returns the GrantManager object that is used to determine grant information for the database.TransactionSystem
getSystem()
Returns a TransactionSystem object that is used to determine information about the transactional system.DataTable
getTable(TableName name)
Returns a DataTable from the database with the given table name.java.lang.String
getUserName()
Returns the user name of the connection.long
nextSequenceValue(java.lang.String name)
Increments the sequence generator and returns the next unique key.void
setSequenceValue(java.lang.String name, long value)
Sets the current sequence value for the given sequence generator.-
Methods inherited from class com.mckoi.database.AbstractQueryContext
addMarkedTable, clearCache, getCachedNode, getMarkedTable, putCachedNode
-
-
-
-
Constructor Detail
-
DatabaseQueryContext
public DatabaseQueryContext(DatabaseConnection database)
Constructs the QueryContext.
-
-
Method Detail
-
getDatabase
public Database getDatabase()
Returns the Database object that this context is a child of.
-
getSystem
public TransactionSystem getSystem()
Returns a TransactionSystem object that is used to determine information about the transactional system.
-
getFunctionLookup
public FunctionLookup getFunctionLookup()
Returns the system FunctionLookup object.
-
getGrantManager
public GrantManager getGrantManager()
Returns the GrantManager object that is used to determine grant information for the database.
-
getTable
public DataTable getTable(TableName name)
Returns a DataTable from the database with the given table name.
-
getDataTableDef
public DataTableDef getDataTableDef(TableName name)
Returns a DataTableDef for the given table name.
-
createViewQueryPlanNode
public QueryPlanNode createViewQueryPlanNode(TableName name)
Creates a QueryPlanNode for the view with the given name.
-
nextSequenceValue
public long nextSequenceValue(java.lang.String name)
Increments the sequence generator and returns the next unique key.
-
currentSequenceValue
public long currentSequenceValue(java.lang.String name)
Returns the current sequence value returned for the given sequence generator within the connection defined by this context. If a value was not returned for this connection then a statement exception is generated.
-
setSequenceValue
public void setSequenceValue(java.lang.String name, long value)
Sets the current sequence value for the given sequence generator.
-
getUserName
public java.lang.String getUserName()
Returns the user name of the connection.
-
-