ResultColumnDescriptor

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org.apache.derby.iapi.sql
Interface ResultColumnDescriptor

public interface ResultColumnDescriptor

A ResultColumnDescriptor describes a result column in a ResultSet.

Method Summary

int getColumnPosition()
          Get the position of the Column.

java.lang.String getName()
          Returns the name of the Column.

java.lang.String getSourceSchemaName()
          Get the name of the schema for the Column's base table, if any.

java.lang.String getSourceTableName()
          Get the name of the underlying(base) table this column comes from, if any.

org.apache.derby.iapi.types.DataTypeDescriptor getType()
          Returns a DataTypeDescriptor for the column.

boolean isAutoincrement()
          Tell us if the column is an autoincrement column or not.

boolean updatableByCursor()
          Return true if the column is wirtable by a positioned update.

Method Detail

getType

public org.apache.derby.iapi.types.DataTypeDescriptor getType()

Returns a DataTypeDescriptor for the column. This DataTypeDescriptor will not represent an actual value, it will only represent the type that all values in the column will have.

getName

public java.lang.String getName()

Returns the name of the Column.

getSourceSchemaName

public java.lang.String getSourceSchemaName()

Get the name of the schema for the Column's base table, if any. Following example queries will all return APP (assuming user is in schema APP) select t.a from t select b.a from t as b select app.t.a from t

getSourceTableName

public java.lang.String getSourceTableName()

Get the name of the underlying(base) table this column comes from, if any. Following example queries will all return T select a from t select b.a from t as b select t.a from t

updatableByCursor

public boolean updatableByCursor()

Return true if the column is wirtable by a positioned update.

getColumnPosition

public int getColumnPosition()

Get the position of the Column. NOTE - position is 1-based.

isAutoincrement

public boolean isAutoincrement()

Tell us if the column is an autoincrement column or not.