java.lang.Object
- org.postgresql.pljava.jdbc.AbstractResultSetMetaData

All Implemented Interfaces:

ResultSetMetaData, Wrapper

Direct Known Subclasses:

SPIResultSetMetaData, SyntheticResultSetMetaData
```
public abstract class AbstractResultSetMetaData
extends Object
implements ResultSetMetaData
```
Implementation of ResultSetMetaData for SyntheticResultSet

Author:

Filip Hrbek

Field Summary
- Fields inherited from interface java.sql.ResultSetMetaData
  columnNoNulls, columnNullable, columnNullableUnknown

Constructor Summary

Constructors
Constructor Description

AbstractResultSetMetaData()
Constructor.

Method Summary

Modifier and Type	Method	Description
`protected abstract void`	`checkColumnIndex(int column)`	Checks if the column index is valid.
`String`	`getCatalogName(int column)`	Gets the designated column's table's catalog name.
`abstract String`	`getColumnClassName(int column)`	Returns the fully-qualified name of the Java class whose instances are manufactured if the method `ResultSet.getObject` is called to retrieve a value from the column.
`abstract int`	`getColumnCount()`	Returns the number of columns in this `ResultSet` object.
`int`	`getColumnDisplaySize(int column)`	Indicates the designated column's normal maximum width in characters.
`abstract String`	`getColumnLabel(int column)`	Gets the designated column's suggested title for use in printouts and displays.
`String`	`getColumnName(int column)`	Get the designated column's name.
`int`	`getColumnType(int column)`	Retrieves the designated column's SQL type.
`String`	`getColumnTypeName(int column)`	Retrieves the designated column's database-specific type name.
`protected abstract int`	`getFieldLength(int column)`	Gets column length
`protected abstract Oid`	`getOid(int column)`	Gets column OID
`int`	`getPrecision(int column)`	Get the designated column's number of decimal digits.
`int`	`getScale(int column)`	Gets the designated column's number of digits to right of the decimal point.
`String`	`getSchemaName(int column)`	Get the designated column's table's schema.
`String`	`getTableName(int column)`	Gets the designated column's table name.
`abstract boolean`	`isAutoIncrement(int column)`	Indicates whether the designated column is automatically numbered, thus read-only.
`boolean`	`isCaseSensitive(int column)`	Indicates whether a column's case matters.
`boolean`	`isCurrency(int column)`	Indicates whether the designated column is a cash value.
`boolean`	`isDefinitelyWritable(int column)`	Indicates whether a write on the designated column will definitely succeed.
`int`	`isNullable(int column)`	Indicates the nullability of values in the designated column.
`boolean`	`isReadOnly(int column)`	Indicates whether the designated column is definitely not writable.
`boolean`	`isSearchable(int column)`	Indicates whether the designated column can be used in a where clause.
`boolean`	`isSigned(int column)`	Indicates whether values in the designated column are signed numbers.
`boolean`	`isWrapperFor(Class<?> iface)`
`boolean`	`isWritable(int column)`	Indicates whether it is possible for a write on the designated column to succeed.
`<T> T`	`unwrap(Class<T> iface)`

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

- Constructor Detail
  - AbstractResultSetMetaData
```
public AbstractResultSetMetaData()
```
    Constructor.
- Method Detail
  - getColumnCount
```
public abstract int getColumnCount()
                            throws SQLException
```
    Returns the number of columns in this ResultSet object.
    
    Specified by:
    
    getColumnCount in interface ResultSetMetaData
    
    Returns:
    
    the number of columns
    
    Throws:
    
    SQLException - if a database access error occurs
  - isAutoIncrement
```
public abstract boolean isAutoIncrement(int column)
                                 throws SQLException
```
    Indicates whether the designated column is automatically numbered, thus read-only.
    
    Specified by:
    
    isAutoIncrement in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - isCaseSensitive
```
public final boolean isCaseSensitive(int column)
                              throws SQLException
```
    Indicates whether a column's case matters.
    
    Specified by:
    
    isCaseSensitive in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - isSearchable
```
public final boolean isSearchable(int column)
                           throws SQLException
```
    Indicates whether the designated column can be used in a where clause.
    
    Specified by:
    
    isSearchable in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - isCurrency
```
public final boolean isCurrency(int column)
                         throws SQLException
```
    Indicates whether the designated column is a cash value.
    
    Specified by:
    
    isCurrency in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - isNullable
```
public final int isNullable(int column)
                     throws SQLException
```
    Indicates the nullability of values in the designated column.
    
    Specified by:
    
    isNullable in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    the nullability status of the given column; one of columnNoNulls, columnNullable or columnNullableUnknown
    
    Throws:
    
    SQLException - if a database access error occurs
  - isSigned
```
public final boolean isSigned(int column)
                       throws SQLException
```
    Indicates whether values in the designated column are signed numbers.
    
    Specified by:
    
    isSigned in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - getColumnDisplaySize
```
public final int getColumnDisplaySize(int column)
                               throws SQLException
```
    Indicates the designated column's normal maximum width in characters.
    
    Specified by:
    
    getColumnDisplaySize in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    the normal maximum number of characters allowed as the width of the designated column
    
    Throws:
    
    SQLException - if a database access error occurs
  - getColumnLabel
```
public abstract String getColumnLabel(int column)
                               throws SQLException
```
    Gets the designated column's suggested title for use in printouts and displays.
    
    Specified by:
    
    getColumnLabel in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    the suggested column title
    
    Throws:
    
    SQLException - if a database access error occurs
  - getColumnName
```
public String getColumnName(int column)
                     throws SQLException
```
    Get the designated column's name.
    
    Specified by:
    
    getColumnName in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    column name
    
    Throws:
    
    SQLException - if a database access error occurs
  - getSchemaName
```
public final String getSchemaName(int column)
                           throws SQLException
```
    Get the designated column's table's schema.
    
    Specified by:
    
    getSchemaName in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    schema name or "" if not applicable
    
    Throws:
    
    SQLException - if a database access error occurs
  - getPrecision
```
public final int getPrecision(int column)
                       throws SQLException
```
    Get the designated column's number of decimal digits.
    
    Specified by:
    
    getPrecision in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    precision
    
    Throws:
    
    SQLException - if a database access error occurs
  - getScale
```
public final int getScale(int column)
                   throws SQLException
```
    Gets the designated column's number of digits to right of the decimal point.
    
    Specified by:
    
    getScale in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    scale
    
    Throws:
    
    SQLException - if a database access error occurs
  - getTableName
```
public final String getTableName(int column)
                          throws SQLException
```
    Gets the designated column's table name.
    
    Specified by:
    
    getTableName in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    table name or "" if not applicable
    
    Throws:
    
    SQLException - if a database access error occurs
  - getCatalogName
```
public final String getCatalogName(int column)
                            throws SQLException
```
    Gets the designated column's table's catalog name.
    
    Specified by:
    
    getCatalogName in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    the name of the catalog for the table in which the given column appears or "" if not applicable
    
    Throws:
    
    SQLException - if a database access error occurs
  - getColumnType
```
public final int getColumnType(int column)
                        throws SQLException
```
    Retrieves the designated column's SQL type.
    
    Specified by:
    
    getColumnType in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    SQL type from Types
    
    Throws:
    
    SQLException - if a database access error occurs
    
    See Also:
    
    Types
  - getColumnTypeName
```
public final String getColumnTypeName(int column)
                               throws SQLException
```
    Retrieves the designated column's database-specific type name.
    
    Specified by:
    
    getColumnTypeName in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    type name used by the database. If the column type is a user-defined type, then a fully-qualified type name is returned.
    
    Throws:
    
    SQLException - if a database access error occurs
  - isReadOnly
```
public final boolean isReadOnly(int column)
                         throws SQLException
```
    Indicates whether the designated column is definitely not writable.
    
    Specified by:
    
    isReadOnly in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - isWritable
```
public final boolean isWritable(int column)
                         throws SQLException
```
    Indicates whether it is possible for a write on the designated column to succeed.
    
    Specified by:
    
    isWritable in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - isDefinitelyWritable
```
public final boolean isDefinitelyWritable(int column)
                                   throws SQLException
```
    Indicates whether a write on the designated column will definitely succeed.
    
    Specified by:
    
    isDefinitelyWritable in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    true if so; false otherwise
    
    Throws:
    
    SQLException - if a database access error occurs
  - getColumnClassName
```
public abstract String getColumnClassName(int column)
                                   throws SQLException
```
    Returns the fully-qualified name of the Java class whose instances are manufactured if the method ResultSet.getObject is called to retrieve a value from the column. ResultSet.getObject may return a subclass of the class returned by this method.
    
    Specified by:
    
    getColumnClassName in interface ResultSetMetaData
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Returns:
    
    the fully-qualified name of the class in the Java programming language that would be used by the method ResultSet.getObject to retrieve the value in the specified column. This is the class name used for custom mapping.
    
    Throws:
    
    SQLException - if a database access error occurs
    
    Since:
    
    1.2
  - checkColumnIndex
```
protected abstract void checkColumnIndex(int column)
                                  throws SQLException
```
    Checks if the column index is valid.
    
    Parameters:
    
    column - the first column is 1, the second is 2, ...
    
    Throws:
    
    SQLException - if the column is out of index bounds
  - getOid
```
protected abstract Oid getOid(int column)
                       throws SQLException
```
    Gets column OID
    
    Parameters:
    
    column - Column index
    
    Returns:
    
    column OID
    
    Throws:
    
    SQLException - if an error occurs
  - getFieldLength
```
protected abstract int getFieldLength(int column)
                               throws SQLException
```
    Gets column length
    
    Parameters:
    
    column - Column index
    
    Returns:
    
    column length
    
    Throws:
    
    SQLException - if an error occurs
  - isWrapperFor
```
public boolean isWrapperFor(Class<?> iface)
                     throws SQLException
```
    Specified by:
    
    isWrapperFor in interface Wrapper
    
    Throws:
    
    SQLException
  - unwrap
```
public <T> T unwrap(Class<T> iface)
             throws SQLException
```
    Specified by:
    
    unwrap in interface Wrapper
    
    Throws:
    
    SQLException

Class AbstractResultSetMetaData

Field Summary

Fields inherited from interface java.sql.ResultSetMetaData

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

AbstractResultSetMetaData

Method Detail

getColumnCount

isAutoIncrement

isCaseSensitive

isSearchable

isCurrency

isNullable

isSigned

getColumnDisplaySize

getColumnLabel

getColumnName

getSchemaName

getPrecision

getScale

getTableName

getCatalogName

getColumnType

getColumnTypeName

isReadOnly

isWritable

isDefinitelyWritable

getColumnClassName

checkColumnIndex

getOid

getFieldLength

isWrapperFor

unwrap