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java.lang.Objectorg.apache.derby.vti.VTIMetaDataTemplate
public abstract class VTIMetaDataTemplate
An abstract implementation of ResultSetMetaData (JDBC 1.2) that is useful when writing a VTI (virtual table interface). This class implements most of the methods of ResultSetMetaData, each one throwing a SQLException with the name of the method. A concrete subclass can then just implement the methods not implemented here and override any methods it needs to implement for correct functionality.
The methods not implemented here are
Field Summary |
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Fields inherited from interface java.sql.ResultSetMetaData |
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columnNoNulls, columnNullable, columnNullableUnknown |
Constructor Summary | |
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VTIMetaDataTemplate()
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Method Summary | |
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java.lang.String |
getCatalogName(int column)
What's a column's table's catalog name? |
java.lang.String |
getColumnClassName(int column)
Returns the fully-qualified name of the Java class whose instances are manufactured if the method ResultSet.
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int |
getColumnDisplaySize(int column)
What's the column's normal maximum width in chars? |
java.lang.String |
getColumnLabel(int column)
What's the suggested column title for use in printouts and displays? |
java.lang.String |
getColumnName(int column)
What's a column's name? |
java.lang.String |
getColumnTypeName(int column)
What's a column's data source specific type name? |
int |
getPrecision(int column)
How many decimal digits are in the column? |
int |
getScale(int column)
What's a column's number of digits to the right of the decimal point? |
java.lang.String |
getSchemaName(int column)
What's a column's table's schema? |
java.lang.String |
getTableName(int column)
What's a column's table name? |
boolean |
isAutoIncrement(int column)
Is the column automatically numbered, and thus read-only? |
boolean |
isCaseSensitive(int column)
Does a column's case matter? |
boolean |
isCurrency(int column)
Is the column a cash value? |
boolean |
isDefinitelyWritable(int column)
Will a write on the column definitely succeed? |
int |
isNullable(int column)
Can you put a NULL in this column? |
boolean |
isReadOnly(int column)
Is a column definitely not writable? |
boolean |
isSearchable(int column)
Can the column be used in a WHERE clause? |
boolean |
isSigned(int column)
Is the column a signed number? |
boolean |
isWritable(int column)
Is it possible for a write on the column to succeed? |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface java.sql.ResultSetMetaData |
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getColumnCount, getColumnType |
Methods inherited from interface java.sql.Wrapper |
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isWrapperFor, unwrap |
Constructor Detail |
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public VTIMetaDataTemplate()
Method Detail |
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public boolean isAutoIncrement(int column) throws java.sql.SQLException
isAutoIncrement
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public boolean isCaseSensitive(int column) throws java.sql.SQLException
isCaseSensitive
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public boolean isSearchable(int column) throws java.sql.SQLException
isSearchable
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public boolean isCurrency(int column) throws java.sql.SQLException
isCurrency
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public int isNullable(int column) throws java.sql.SQLException
isNullable
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public boolean isSigned(int column) throws java.sql.SQLException
isSigned
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public int getColumnDisplaySize(int column) throws java.sql.SQLException
getColumnDisplaySize
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public java.lang.String getColumnLabel(int column) throws java.sql.SQLException
getColumnLabel
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public java.lang.String getColumnName(int column) throws java.sql.SQLException
getColumnName
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public java.lang.String getSchemaName(int column) throws java.sql.SQLException
getSchemaName
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public int getPrecision(int column) throws java.sql.SQLException
getPrecision
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public int getScale(int column) throws java.sql.SQLException
getScale
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public java.lang.String getTableName(int column) throws java.sql.SQLException
getTableName
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public java.lang.String getCatalogName(int column) throws java.sql.SQLException
getCatalogName
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public java.lang.String getColumnTypeName(int column) throws java.sql.SQLException
getColumnTypeName
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public boolean isReadOnly(int column) throws java.sql.SQLException
isReadOnly
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public boolean isWritable(int column) throws java.sql.SQLException
isWritable
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public boolean isDefinitelyWritable(int column) throws java.sql.SQLException
isDefinitelyWritable
in interface java.sql.ResultSetMetaData
column
- the first column is 1, the second is 2, ...
java.sql.SQLException
- if a database-access error occurs.public java.lang.String getColumnClassName(int column) throws java.sql.SQLException
ResultSet.getObject
is called to retrieve a value from the column. JDBC 2.0.
getColumnClassName
in interface java.sql.ResultSetMetaData
java.sql.SQLException
- if a database-access error occurs
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