Package org.apache.cayenne.access.types

Class CharType

java.lang.Object

org.apache.cayenne.access.types.CharType

All Implemented Interfaces:

ExtendedType<String>

Direct Known Subclasses:

OracleCharType

public class CharType
extends Object
implements ExtendedType<String>

Handles java.lang.String, mapping it as either of JDBC types - CLOB or (VAR)CHAR. Can be configured to trim trailing spaces.

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	trimmingChars
protected boolean	usingClobs

Constructor Summary

Constructors

Constructor	Description
CharType(boolean trimmingChars, boolean usingClobs)

Method Summary

Modifier and Type	Method	Description
String	getClassName()	Returns "java.lang.String".
boolean	isTrimmingChars()	Returns true if 'materializeObject' method should trim trailing spaces from the CHAR columns.
boolean	isUsingClobs()
String	materializeObject(CallableStatement cs, int index, int type)	Reads an object from a stored procedure OUT parameter, converting it to class returned by 'getClassName' method.
String	materializeObject(ResultSet rs, int index, int type)	Return trimmed string.
protected String	readCharStream(ResultSet rs, int index)
protected String	readClob(Clob clob)
protected String	readValueStream(Reader in, int streamSize, int bufSize)
protected String	rtrim(String value)	Trim right spaces.
void	setJdbcObject(PreparedStatement st, String value, int pos, int type, int scale)	Initializes a single parameter of a PreparedStatement with object value.
void	setTrimmingChars(boolean trimingChars)
void	setUsingClobs(boolean usingClobs)
String	toString(String value)	Converts value of the supported type to a human-readable String representation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

trimmingChars

protected boolean trimmingChars

usingClobs

protected boolean usingClobs

Constructor Detail

CharType

public CharType(boolean trimmingChars,
                boolean usingClobs)

Method Detail

getClassName

public String getClassName()

Returns "java.lang.String".

Specified by:

getClassName in interface ExtendedType<String>

materializeObject

public String materializeObject(ResultSet rs,
                                int index,
                                int type)
                         throws Exception

Return trimmed string.

Specified by:

materializeObject in interface ExtendedType<String>

Throws:

Exception - if read error occurred, or an object can't be converted to a target Java class.

materializeObject

public String materializeObject(CallableStatement cs,
                                int index,
                                int type)
                         throws Exception

Description copied from interface: ExtendedType

Reads an object from a stored procedure OUT parameter, converting it to class returned by 'getClassName' method.

Specified by:

materializeObject in interface ExtendedType<String>

Throws:

Exception - if read error occurred, or an object can't be converted to a target Java class.

rtrim

protected String rtrim(String value)

Trim right spaces.

setJdbcObject

public void setJdbcObject(PreparedStatement st,
                          String value,
                          int pos,
                          int type,
                          int scale)
                   throws Exception

Description copied from interface: ExtendedType

Initializes a single parameter of a PreparedStatement with object value.

Specified by:

setJdbcObject in interface ExtendedType<String>

Throws:

Exception

toString

public String toString(String value)

Description copied from interface: ExtendedType

Converts value of the supported type to a human-readable String representation.

Specified by:

toString in interface ExtendedType<String>

Parameters:

value - a value to convert to String.

readClob

protected String readClob(Clob clob)
                   throws IOException,
                          SQLException

Throws:

IOException

SQLException

readCharStream

protected String readCharStream(ResultSet rs,
                                int index)
                         throws IOException,
                                SQLException

Throws:

IOException

SQLException

readValueStream

protected String readValueStream(Reader in,
                                 int streamSize,
                                 int bufSize)
                          throws IOException

Throws:

IOException

isTrimmingChars

public boolean isTrimmingChars()

Returns true if 'materializeObject' method should trim trailing spaces from the CHAR columns. This addresses an issue with some JDBC drivers (e.g. Oracle), that return Strings for CHAR columns padded with spaces.

setTrimmingChars

public void setTrimmingChars(boolean trimingChars)

isUsingClobs

public boolean isUsingClobs()

setUsingClobs

public void setUsingClobs(boolean usingClobs)