ModeShape Distribution 3.0.0.Beta4

org.modeshape.jdbc
Class JcrResultSetMetaData

java.lang.Object
  extended by org.modeshape.jdbc.JcrResultSetMetaData
All Implemented Interfaces:
ResultSetMetaData, Wrapper

public class JcrResultSetMetaData
extends Object
implements ResultSetMetaData

This driver's ResultSetMetaData implementation that obtains the metadata information from the JCR query result and (where possible) the column's corresponding property definitions.


Field Summary
 
Fields inherited from interface java.sql.ResultSetMetaData
columnNoNulls, columnNullable, columnNullableUnknown
 
Constructor Summary
protected JcrResultSetMetaData(JcrConnection connection, QueryResult results)
           
 
Method Summary
 String getCatalogName(int column)
           All columns come from the same repository (i.e., catalog).
 String getColumnClassName(int column)
          
 int getColumnCount()
          
 int getColumnDisplaySize(int column)
           This method returns the nominal display size based upon the column's type.
 String getColumnLabel(int column)
          
 String getColumnName(int column)
          
 int getColumnType(int column)
          
 String getColumnTypeName(int column)
          
 int getPrecision(int column)
           This method always returns the nominal display size for the type.
 int getScale(int column)
           This method returns the number of digits behind the decimal point, which is assumed to be 3 if the type is PropertyType.DOUBLE or 0 otherwise.
 String getSchemaName(int column)
           This method always returns the workspace name.
 String getTableName(int column)
          
 boolean isAutoIncrement(int column)
           This method always returns false, since this JCR property types don't represent auto-incremented values.
 boolean isCaseSensitive(int column)
          
 boolean isCurrency(int column)
           This method always returns false, since no JCR property types (directly) represent currency.
 boolean isDefinitelyWritable(int column)
           This method always returns false, since this JDBC driver does not support writes.
 int isNullable(int column)
          
 boolean isReadOnly(int column)
           Even though the value may be writable in the JCR repository, this JDBC driver does not support writes.
 boolean isSearchable(int column)
           In JCR-SQL2, every property can be used in a WHERE clause.
 boolean isSigned(int column)
           This method returns true if the column is a PropertyType.DOUBLE, PropertyType.LONG or PropertyType.DATE.
 boolean isWrapperFor(Class<?> iface)
          
 boolean isWritable(int column)
           Even though the value may be writable in the JCR repository, this JDBC driver does not support writes.
<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

JcrResultSetMetaData

protected JcrResultSetMetaData(JcrConnection connection,
                               QueryResult results)
Method Detail

getCatalogName

public String getCatalogName(int column)

All columns come from the same repository (i.e., catalog).

Specified by:
getCatalogName in interface ResultSetMetaData
See Also:
ResultSetMetaData.getCatalogName(int)

getColumnClassName

public String getColumnClassName(int column)

Specified by:
getColumnClassName in interface ResultSetMetaData
See Also:
ResultSetMetaData.getColumnClassName(int)

getColumnCount

public int getColumnCount()
                   throws SQLException

Specified by:
getColumnCount in interface ResultSetMetaData
Throws:
SQLException
See Also:
ResultSetMetaData.getColumnCount()

getColumnDisplaySize

public int getColumnDisplaySize(int column)

This method returns the nominal display size based upon the column's type. Therefore, the value may not reflect the optimal display size for any given value.

Specified by:
getColumnDisplaySize in interface ResultSetMetaData
See Also:
ResultSetMetaData.getColumnDisplaySize(int)

getColumnLabel

public String getColumnLabel(int column)
                      throws SQLException

Specified by:
getColumnLabel in interface ResultSetMetaData
Throws:
SQLException
See Also:
ResultSetMetaData.getColumnLabel(int)

getColumnName

public String getColumnName(int column)
                     throws SQLException

Specified by:
getColumnName in interface ResultSetMetaData
Throws:
SQLException
See Also:
ResultSetMetaData.getColumnName(int)

getColumnType

public int getColumnType(int column)

Specified by:
getColumnType in interface ResultSetMetaData
See Also:
ResultSetMetaData.getColumnType(int)

getColumnTypeName

public String getColumnTypeName(int column)

Specified by:
getColumnTypeName in interface ResultSetMetaData
See Also:
ResultSetMetaData.getColumnTypeName(int)

getPrecision

public int getPrecision(int column)

This method always returns the nominal display size for the type.

Specified by:
getPrecision in interface ResultSetMetaData
See Also:
ResultSetMetaData.getPrecision(int)

getScale

public int getScale(int column)

This method returns the number of digits behind the decimal point, which is assumed to be 3 if the type is PropertyType.DOUBLE or 0 otherwise.

Specified by:
getScale in interface ResultSetMetaData
See Also:
ResultSetMetaData.getScale(int)

getSchemaName

public String getSchemaName(int column)

This method always returns the workspace name.

Specified by:
getSchemaName in interface ResultSetMetaData
See Also:
ResultSetMetaData.getSchemaName(int)

getTableName

public String getTableName(int column)
                    throws SQLException

Specified by:
getTableName in interface ResultSetMetaData
Throws:
SQLException
See Also:
ResultSetMetaData.getTableName(int)

isAutoIncrement

public boolean isAutoIncrement(int column)

This method always returns false, since this JCR property types don't represent auto-incremented values.

Specified by:
isAutoIncrement in interface ResultSetMetaData
See Also:
ResultSetMetaData.isAutoIncrement(int)

isCaseSensitive

public boolean isCaseSensitive(int column)

Specified by:
isCaseSensitive in interface ResultSetMetaData
See Also:
ResultSetMetaData.isCaseSensitive(int)

isCurrency

public boolean isCurrency(int column)

This method always returns false, since no JCR property types (directly) represent currency.

Specified by:
isCurrency in interface ResultSetMetaData
See Also:
ResultSetMetaData.isCurrency(int)

isDefinitelyWritable

public boolean isDefinitelyWritable(int column)

This method always returns false, since this JDBC driver does not support writes.

Specified by:
isDefinitelyWritable in interface ResultSetMetaData
See Also:
ResultSetMetaData.isDefinitelyWritable(int)

isNullable

public int isNullable(int column)
               throws SQLException

Specified by:
isNullable in interface ResultSetMetaData
Throws:
SQLException
See Also:
ResultSetMetaData.isNullable(int)

isReadOnly

public boolean isReadOnly(int column)

Even though the value may be writable in the JCR repository, this JDBC driver does not support writes. Therefore, this method always returns true.

Specified by:
isReadOnly in interface ResultSetMetaData
See Also:
ResultSetMetaData.isReadOnly(int)

isSearchable

public boolean isSearchable(int column)

In JCR-SQL2, every property can be used in a WHERE clause. Therefore, this method always returns true.

Specified by:
isSearchable in interface ResultSetMetaData
See Also:
ResultSetMetaData.isSearchable(int)

isSigned

public boolean isSigned(int column)

This method returns true if the column is a PropertyType.DOUBLE, PropertyType.LONG or PropertyType.DATE.

Specified by:
isSigned in interface ResultSetMetaData
See Also:
ResultSetMetaData.isSigned(int)

isWritable

public boolean isWritable(int column)

Even though the value may be writable in the JCR repository, this JDBC driver does not support writes. Therefore, this method always returns false.

Specified by:
isWritable in interface ResultSetMetaData
See Also:
ResultSetMetaData.isWritable(int)

isWrapperFor

public boolean isWrapperFor(Class<?> iface)

Specified by:
isWrapperFor in interface Wrapper
See Also:
Wrapper.isWrapperFor(java.lang.Class)

unwrap

public <T> T unwrap(Class<T> iface)
         throws SQLException

Specified by:
unwrap in interface Wrapper
Throws:
SQLException
See Also:
Wrapper.unwrap(java.lang.Class)

ModeShape Distribution 3.0.0.Beta4

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