net.ontopia.persistence.query.sql
Class SQLVerbatim

java.lang.Object
  net.ontopia.persistence.query.sql.SQLVerbatim

All Implemented Interfaces:

SQLValueIF

public class SQLVerbatim
extends Object
implements SQLValueIF

INTERNAL: Represents a verbatim SQL expression value.

Field Summary

protected String	alias
protected static FieldHandlerIF	DEFAULT_FIELD_HANDLER
protected static Class	DEFAULT_VALUE_TYPE
protected FieldHandlerIF	fhandler
protected SQLTable[]	tables
protected Object	value
protected Class	vtype

Fields inherited from interface net.ontopia.persistence.query.sql.SQLValueIF

COLUMNS, FUNCTION, NULL, PARAMETER, PRIMITIVE, TUPLE, VERBATIM

Constructor Summary

SQLVerbatim(Object value)

SQLVerbatim(Object value, SQLTable[] tables)

Method Summary

String	getAlias() INTERNAL: The column alias to use if this value is included in the projection.
int	getArity() INTERNAL: Returns the [column] arity of the value.
FieldHandlerIF	getFieldHandler() INTERNAL: Returns the field handler for the columns.
SQLValueIF	getReference() INTERNAL: Returns the referenced value if one exists.
SQLTable[]	getTables() INTERNAL: Returns the tables that are involved in the verbatim expression.
int	getType() INTERNAL: Returns the value class type.
Object	getValue()
int	getValueArity() INTERNAL: Returns the value arity of the value.
Class	getValueType() INTERNAL: Returns the value type.
boolean	isReference() INTERNAL: Returns true if this value is a reference to another.
void	setAlias(String alias) INTERNAL: Sets the column alias.
void	setFieldHandler(FieldHandlerIF fhandler) INTERNAL: Sets the field handler for the value.
void	setTables(SQLTable[] tables)
void	setValueType(Class vtype) INTERNAL: Sets the value type.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_VALUE_TYPE

protected static final Class DEFAULT_VALUE_TYPE

DEFAULT_FIELD_HANDLER

protected static final FieldHandlerIF DEFAULT_FIELD_HANDLER

value

protected Object value

alias

protected String alias

tables

protected SQLTable[] tables

vtype

protected Class vtype

fhandler

protected FieldHandlerIF fhandler

Constructor Detail

SQLVerbatim

public SQLVerbatim(Object value)

SQLVerbatim

public SQLVerbatim(Object value,
                   SQLTable[] tables)

Method Detail

getType

public int getType()

Description copied from interface: SQLValueIF

INTERNAL: Returns the value class type. The type is represented by one of the constants in the SQLValueIF interface.

Specified by:

getType in interface SQLValueIF

getArity

public int getArity()

Description copied from interface: SQLValueIF

INTERNAL: Returns the [column] arity of the value. The number represents the number of "columns" the value spans, i.e. its composite width.

Specified by:

getArity in interface SQLValueIF

getValueArity

public int getValueArity()

Description copied from interface: SQLValueIF

INTERNAL: Returns the value arity of the value. This number refers to the number of nested values this value contains including itself. Most values therefore have a value arity of 1. Nested values may have an arity higher than 1. SQLTuple is currently the only nested value type.

Specified by:

getValueArity in interface SQLValueIF

getAlias

public String getAlias()

Description copied from interface: SQLValueIF

INTERNAL: The column alias to use if this value is included in the projection. The SQL select syntax is typically like "select value as from foo".

Specified by:

getAlias in interface SQLValueIF

setAlias

public void setAlias(String alias)

Description copied from interface: SQLValueIF

INTERNAL: Sets the column alias.

Specified by:

setAlias in interface SQLValueIF

isReference

public boolean isReference()

Description copied from interface: SQLValueIF

INTERNAL: Returns true if this value is a reference to another.

Specified by:

isReference in interface SQLValueIF

getReference

public SQLValueIF getReference()

Description copied from interface: SQLValueIF

INTERNAL: Returns the referenced value if one exists.

Specified by:

getReference in interface SQLValueIF

getValue

public Object getValue()

getValueType

public Class getValueType()

Description copied from interface: SQLValueIF

INTERNAL: Returns the value type.

Specified by:

getValueType in interface SQLValueIF

setValueType

public void setValueType(Class vtype)

Description copied from interface: SQLValueIF

INTERNAL: Sets the value type.

Specified by:

setValueType in interface SQLValueIF

getFieldHandler

public FieldHandlerIF getFieldHandler()

INTERNAL: Returns the field handler for the columns. Default field handler is DefaultFieldHandler with type java.sql.Types.VARCHAR when not specified.

Specified by:

getFieldHandler in interface SQLValueIF

setFieldHandler

public void setFieldHandler(FieldHandlerIF fhandler)

Description copied from interface: SQLValueIF

INTERNAL: Sets the field handler for the value.

Specified by:

setFieldHandler in interface SQLValueIF

getTables

public SQLTable[] getTables()

INTERNAL: Returns the tables that are involved in the verbatim expression. This information is neccessary so that the FROM clause can be correctly generated.

setTables

public void setTables(SQLTable[] tables)

toString

public String toString()

Overrides:

toString in class Object