com.jcorporate.expresso.core.dbobj
Class DBField

java.lang.Object
  com.jcorporate.expresso.core.dbobj.DBField

All Implemented Interfaces:

DataFieldMetaData, Serializable

public class DBField

extends Object

implements Serializable, DataFieldMetaData

A DBField object represents a single field definition in a DBObjectDef. It does not store any actual data, only the meta-data associated with a field.

Author:

Michael Nash

See Also:

Serialized Form

Field Summary

static Set	allDataTypes Contains a list of all recognized expresso data types.
protected boolean	allowNull Is a null value allowed for this field.
static String	ARRAY_TYPE
static String	ATTRIBUTE_ERROR Attribute String for if there's an error with the field.
static String	ATTRIBUTE_ERROR_MESSAGE Attribute String for what message to display if there's an error with thie field.
protected Hashtable	attributes User Defined Attributes for each field.
static String	AUTOINC_TYPE AUTOINC_TYPE is a special expresso type code for auto-increment field, a synonym for integer.
static String	BIGINT_TYPE
static String	BINARY_TYPE
static String	BIT_TYPE
static String	BLOB_TYPE
static String	BOOLEAN_MASK Boolean regular expression syntax for easy reference.
static String	BOOLEAN_TYPE boolean is synonym for bit
static String	CHAR_TYPE
static String	CLOB_TYPE
static String	DATE_MASK Date regular expression syntax for easy reference.
static String	DATE_TYPE
static String	DATETIME_TYPE datetime is a synonym for timestamp
static String	DECIMAL_TYPE
protected String	description The user friendly description of this field.
static String	DOUBLE_TYPE
protected boolean	encrypted Set this value to true if you want a particular string field encrypted (Not implemented yet)
protected String	expressoFieldTypeString The string "type" used to specify this type of field in Expresso
protected String	fieldName
protected int	fieldSize The size of this field.
protected String	filterMethod What is the string filtering method applied with this filter
static String	FLOAT_MASK Floating point regular expression syntax for easy reference.
static String	FLOAT_TYPE
protected boolean	hashed Set this value to true if you want a particular string field hashed instead of stored in plaintext.
static String	INT_MASK Integer Regular Expression for easy reference
static String	INT_TYPE int is synonym for integer
static String	INTEGER_TYPE
protected boolean	isCharacterLongObject Is this object a CLOB?
protected boolean	isFloatingPointType
protected boolean	isKey Is this a key field?
protected boolean	isLongObject Is this object a LOB?
protected boolean	isMultiValued Is this a multivalued field
protected boolean	isReadOnly Is this field readonly?
protected boolean	isSecret Does this field not appear in standard DBMaint listings?
protected boolean	isVirtual Is this a virtual field: Ie, does the system provide all values for this field.
static String	JAVA_OBJECT
static String	LONG_TYPE long is a synonym for BIGINT
static String	LONGVARBINARY
static String	LONGVARCHAR_TYPE
protected String	lookupDefinition Optional parameter that defines the definition of the lookup object if the lookup object implements the Defineable interface.
protected String	lookupField String for the lookup field in the lookup object that maps to this field.
protected String	lookupObject String for lookup object classname
protected org.apache.oro.text.regex.Pattern	mask
static String	NULL_TYPE null isn't supported in expresso as of 5/02
static String	NUMERIC_TYPE
static String	OTHER_TYPE
protected int	precision Field precision, if applicable to this field
static String	REAL_TYPE
static String	REF_TYPE
static String	SMALLINT_TYPE
static String	STRUCT_TYPE
static String	TEXT_TYPE text is a synonym for longvarchar
static String	TIME_TYPE
static String	TIMESTAMP_TYPE
static String	TINYINT_TYPE
static String	VARBINARY_TYPE
static String	VARCHAR_TYPE

Constructor Summary

DBField(String myName, String myType, int newPrecision, boolean myAllowNull, String myDescrip)
constructor for types with no size

DBField(String myName, String myType, int mySize, int newPrecision, boolean myAllowNull, String myDescrip)
Constructor: A DBField is initialized knowing it's name, type, size, description and whether or not it can accept null or empty values

Method Summary

boolean	allowsNull() Does this field allow nulls?
Set	getAllAttributes() Retrieves all attribute names for this particular data field's metadata
Object	getAttribute(String attribName) Returns an attribute keyed by name.
Iterator	getAttributesIterator() Returns a copy of all attributes associated with this field.
String	getDefaultValue() Retrieve the default value for the field.
String	getDescription() Return the description of this field
Class	getFilterClass() getter for Filter Class used in conjuction with get/setFilterMethod
String	getFilterMethod() Return the filter method currently used for this field.
String	getLength() Return the length of the field in characters
int	getLengthInt() Return the length of this field as an integer
String	getLookupDefinition() Future versions of Expresso will rely more on objects that are shown as unique by a combination of their classname and their definition names.
String	getLookupField() When you get a lookup object, to perform a complete mapping between the two, you need to know what field name in the remote object maps to this field.
String	getLookupObject() Return the value for the lookupObject for this field
org.apache.oro.text.regex.Pattern	getMask() Get the compiled regular expression for this field.
String	getName() Return the name of the field
int	getPrecision() Return the precision of this field as an integer
String	getTypeString() Return the database type of the field as specified with a string in the DBObject itself
boolean	isAutoIncremented() Is this field an auto-incremented field?
boolean	isBinaryObjectType() Is it a BLOB?
boolean	isBooleanType() is the field a boolean?
boolean	isCharacterLongObjectType() Is this field fall into the classification of a long character object?
boolean	isDateOnlyType() is the field a date or time field?
boolean	isDateTimeType() is the field a date or time field?
boolean	isDateType() is the field a date or time field?
boolean	isEncrypted() Return the field's hashed status
boolean	isFloatingPointType()
boolean	isHashed() Return the field's hashed status
boolean	isKey() Is this field a key field?
boolean	isLongBinaryType() Is it a LONGVARBINARY?
boolean	isLongCharacterType() Is it a LONGVARCHAR?
boolean	isLongObjectType() Does this field fall into a class of BLOB object data types?
boolean	isMasked() Return boolean if the field has a mask set
boolean	isMultiValued() Is this field multi-valued?
boolean	isNumericType() is the field a numeric field?
boolean	isQuotedTextType() is the field a quoted text field?
boolean	isReadOnly() Return the field's read-only
boolean	isSecret() Return the field's secret status
boolean	isTimeType() is the field a date or time field?
boolean	isVirtual() Is this field a virtual field?
void	removeAttribute(String attribName) Removes an attribute from this Field object.
void	setAttribute(String attribName, Object attribValue) Sets an attribute for this particular field.
void	setDefaultMask() Set the field's default mask according to it's type
void	setDefaultValue(String newValue) Sets the default value of the field.
void	setEncrypted(boolean newValue) Set the field's encrypted status
void	setFilterClass(Class filterClass) Set's the name of the filter class to be used used in conjuction with get/setFilterMethod
String	setFilterMethod(String newMethod) Set's the name of the filter method to be used
void	setHashed(boolean newValue) Set the field's hashed status.
void	setKey(boolean newKey) Set this field as a key field (or not)
void	setLookupDefinition(String definitionName) Sets the value for the "lookup definition" this is the name of the definition for objects implementing the defineable interface.
void	setLookupField(String lookupFieldName) Sets the value for the "lookup field".
void	setLookupObject(String objectName) Set the value for the "lookup object" for this field.
void	setMask(org.apache.oro.text.regex.Pattern newMask) Set a regular expression "mask" for this field that specifies it's valid values.
void	setMultiValued(boolean newMulti) Set this field to be "multi-valued".
void	setReadOnly() Set the field as a read-only field.
void	setSecret() Set the field as a 'secret' field.
void	setVirtual(boolean newVirtual) Set this field as a virtual field.

Methods inherited from class java.lang.Object

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

Field Detail

AUTOINC_TYPE

public static final transient String AUTOINC_TYPE

AUTOINC_TYPE is a special expresso type code for auto-increment field, a synonym for integer.

See Also:

Constant Field Values

ARRAY_TYPE

public static final transient String ARRAY_TYPE

See Also:

Constant Field Values

BIGINT_TYPE

public static final transient String BIGINT_TYPE

See Also:

Constant Field Values

BINARY_TYPE

public static final transient String BINARY_TYPE

See Also:

Constant Field Values

BIT_TYPE

public static final transient String BIT_TYPE

See Also:

Constant Field Values

BOOLEAN_TYPE

public static final transient String BOOLEAN_TYPE

boolean is synonym for bit

See Also:

Constant Field Values

BLOB_TYPE

public static final transient String BLOB_TYPE

See Also:

Constant Field Values

CHAR_TYPE

public static final transient String CHAR_TYPE

See Also:

Constant Field Values

CLOB_TYPE

public static final transient String CLOB_TYPE

See Also:

Constant Field Values

DATE_TYPE

public static final transient String DATE_TYPE

See Also:

Constant Field Values

DATETIME_TYPE

public static final transient String DATETIME_TYPE

datetime is a synonym for timestamp

See Also:

Constant Field Values

DOUBLE_TYPE

public static final transient String DOUBLE_TYPE

See Also:

Constant Field Values

DECIMAL_TYPE

public static final transient String DECIMAL_TYPE

See Also:

Constant Field Values

FLOAT_TYPE

public static final transient String FLOAT_TYPE

See Also:

Constant Field Values

INTEGER_TYPE

public static final transient String INTEGER_TYPE

See Also:

Constant Field Values

INT_TYPE

public static final transient String INT_TYPE

int is synonym for integer

See Also:

Constant Field Values

JAVA_OBJECT

public static final transient String JAVA_OBJECT

See Also:

Constant Field Values

LONG_TYPE

public static final transient String LONG_TYPE

long is a synonym for BIGINT

See Also:

Constant Field Values

LONGVARCHAR_TYPE

public static final transient String LONGVARCHAR_TYPE

See Also:

Constant Field Values

LONGVARBINARY

public static final transient String LONGVARBINARY

See Also:

Constant Field Values

NULL_TYPE

public static final transient String NULL_TYPE

null isn't supported in expresso as of 5/02

See Also:

Constant Field Values

NUMERIC_TYPE

public static final transient String NUMERIC_TYPE

See Also:

Constant Field Values

OTHER_TYPE

public static final transient String OTHER_TYPE

See Also:

Constant Field Values

REAL_TYPE

public static final transient String REAL_TYPE

See Also:

Constant Field Values

REF_TYPE

public static final transient String REF_TYPE

See Also:

Constant Field Values

SMALLINT_TYPE

public static final transient String SMALLINT_TYPE

See Also:

Constant Field Values

STRUCT_TYPE

public static final transient String STRUCT_TYPE

See Also:

Constant Field Values

TIME_TYPE

public static final transient String TIME_TYPE

See Also:

Constant Field Values

TIMESTAMP_TYPE

public static final transient String TIMESTAMP_TYPE

See Also:

Constant Field Values

TEXT_TYPE

public static final transient String TEXT_TYPE

text is a synonym for longvarchar

See Also:

Constant Field Values

TINYINT_TYPE

public static final transient String TINYINT_TYPE

See Also:

Constant Field Values

VARBINARY_TYPE

public static final transient String VARBINARY_TYPE

See Also:

Constant Field Values

VARCHAR_TYPE

public static final transient String VARCHAR_TYPE

See Also:

Constant Field Values

BOOLEAN_MASK

public static final String BOOLEAN_MASK

Boolean regular expression syntax for easy reference.

See Also:

Constant Field Values

DATE_MASK

public static final String DATE_MASK

Date regular expression syntax for easy reference.

See Also:

Constant Field Values

INT_MASK

public static final String INT_MASK

Integer Regular Expression for easy reference

See Also:

Constant Field Values

FLOAT_MASK

public static final String FLOAT_MASK

Floating point regular expression syntax for easy reference.

See Also:

Constant Field Values

ATTRIBUTE_ERROR

public static final String ATTRIBUTE_ERROR

Attribute String for if there's an error with the field.

See Also:

Constant Field Values

ATTRIBUTE_ERROR_MESSAGE

public static final String ATTRIBUTE_ERROR_MESSAGE

Attribute String for what message to display if there's an error with thie field.

See Also:

Constant Field Values

fieldName

protected String fieldName

expressoFieldTypeString

protected String expressoFieldTypeString

The string "type" used to specify this type of field in Expresso

allowNull

protected boolean allowNull

Is a null value allowed for this field.

description

protected String description

The user friendly description of this field.

fieldSize

protected int fieldSize

The size of this field. ex: 80 for VARCHAR(80)

isVirtual

protected boolean isVirtual

Is this a virtual field: Ie, does the system provide all values for this field.

mask

protected org.apache.oro.text.regex.Pattern mask

attributes

protected Hashtable attributes

User Defined Attributes for each field.

isMultiValued

protected boolean isMultiValued

Is this a multivalued field

isSecret

protected boolean isSecret

Does this field not appear in standard DBMaint listings?

isReadOnly

protected boolean isReadOnly

Is this field readonly?

lookupObject

protected String lookupObject

String for lookup object classname

lookupField

protected String lookupField

String for the lookup field in the lookup object that maps to this field.

lookupDefinition

protected String lookupDefinition

Optional parameter that defines the definition of the lookup object if the lookup object implements the Defineable interface.

isKey

protected boolean isKey

Is this a key field?

isLongObject

protected boolean isLongObject

Is this object a LOB?

isCharacterLongObject

protected boolean isCharacterLongObject

Is this object a CLOB?

filterMethod

protected String filterMethod

What is the string filtering method applied with this filter

encrypted

protected boolean encrypted

Set this value to true if you want a particular string field encrypted (Not implemented yet)

hashed

protected boolean hashed

Set this value to true if you want a particular string field hashed instead of stored in plaintext. (Not implamented yet)

precision

protected int precision

Field precision, if applicable to this field

isFloatingPointType

protected boolean isFloatingPointType

allDataTypes

public static transient Set allDataTypes

Contains a list of all recognized expresso data types.

Constructor Detail

DBField

public DBField(String myName,
               String myType,
               int mySize,
               int newPrecision,
               boolean myAllowNull,
               String myDescrip)
        throws DBException

Constructor: A DBField is initialized knowing it's name, type, size, description and whether or not it can accept null or empty values

Parameters:

myName - Field name of this field

myType - Database type of the field - use string constant from DBField

mySize - Size of the field in characters

newPrecision - precision for this field

myAllowNull - True if null is allowed, false if not

myDescrip - Description (title) of the field

DBField

public DBField(String myName,
               String myType,
               int newPrecision,
               boolean myAllowNull,
               String myDescrip)
        throws DBException

constructor for types with no size

Parameters:

myName - Field name of this field

myType - Database type of the field - use string constant from DBField

newPrecision - precision for this field

myAllowNull - True if null is allowed, false if not

myDescrip - Description (title) of the field

Method Detail

allowsNull

public boolean allowsNull()

Does this field allow nulls?

Specified by:

allowsNull in interface DataFieldMetaData

Returns:

boolean True if the field allows null, else false if it does not

getDescription

public String getDescription()

Return the description of this field

Specified by:

getDescription in interface DataFieldMetaData

Returns:

String Description of the field

getDefaultValue

public String getDefaultValue()

Retrieve the default value for the field.

Specified by:

getDefaultValue in interface DataFieldMetaData

Returns:

String

setDefaultValue

public void setDefaultValue(String newValue)

Sets the default value of the field.

Specified by:

setDefaultValue in interface DataFieldMetaData

Parameters:

newValue - String

getFilterMethod

public String getFilterMethod()

Return the filter method currently used for this field.

Returns:

The name of the filter method

getLength

public String getLength()

Return the length of the field in characters

Returns:

String A String containing the number of characters of this fields length

getLengthInt

public int getLengthInt()

Return the length of this field as an integer

Specified by:

getLengthInt in interface DataFieldMetaData

Returns:

int The length of this field in characters

getLookupObject

public String getLookupObject()

Return the value for the lookupObject for this field

Specified by:

getLookupObject in interface DataFieldMetaData

Returns:

String for the lookup object for this field

getLookupDefinition

public String getLookupDefinition()

Future versions of Expresso will rely more on objects that are shown as unique by a combination of their classname and their definition names. All instances of Defineable must have a corresponding definition name.

Specified by:

getLookupDefinition in interface DataFieldMetaData

Returns:

java.lang.String

getLookupField

public String getLookupField()

When you get a lookup object, to perform a complete mapping between the two, you need to know what field name in the remote object maps to this field.

Specified by:

getLookupField in interface DataFieldMetaData

Returns:

java.lang.String or null if there is no lookup field

Throws:

IllegalArgumentException - if the field name does not exist

getName

public String getName()

Return the name of the field

Specified by:

getName in interface DataFieldMetaData

Returns:

String The name of this field

getPrecision

public int getPrecision()

Return the precision of this field as an integer

Specified by:

getPrecision in interface DataFieldMetaData

Returns:

int The precision of this field

getTypeString

public String getTypeString()

Return the database type of the field as specified with a string in the DBObject itself

Specified by:

getTypeString in interface DataFieldMetaData

Returns:

The type of this field

isKey

public boolean isKey()

Is this field a key field?

Specified by:

isKey in interface DataFieldMetaData

Returns:

true if this field is a key field

isMultiValued

public boolean isMultiValued()

Is this field multi-valued?

Specified by:

isMultiValued in interface DataFieldMetaData

Returns:

boolean True if the field is multi-valued, else false

isReadOnly

public boolean isReadOnly()

Return the field's read-only

Specified by:

isReadOnly in interface DataFieldMetaData

Returns:

True if the field is readonly, else false if it is not

isBooleanType

public boolean isBooleanType()

is the field a boolean? cache answer for efficiency, since field type is immutable

Specified by:

isBooleanType in interface DataFieldMetaData

Returns:

True if the field is boolean

isCharacterLongObjectType

public boolean isCharacterLongObjectType()

Is this field fall into the classification of a long character object?

Specified by:

isCharacterLongObjectType in interface DataFieldMetaData

Returns:

boolean true if it does

isLongObjectType

public boolean isLongObjectType()

Does this field fall into a class of BLOB object data types?

Specified by:

isLongObjectType in interface DataFieldMetaData

Returns:

boolean true if it does

isLongBinaryType

public boolean isLongBinaryType()

Is it a LONGVARBINARY? This is calculated by if it is a long object and is NOT a character long object.

Specified by:

isLongBinaryType in interface DataFieldMetaData

Returns:

boolean True if it is

isLongCharacterType

public boolean isLongCharacterType()

Is it a LONGVARCHAR? This is calculated by if it is a long object and is NOT a character long object.

Specified by:

isLongCharacterType in interface DataFieldMetaData

Returns:

boolean True if it is

isBinaryObjectType

public boolean isBinaryObjectType()

Is it a BLOB? This is calculated by if it is a long object and is NOT a character long object.

Specified by:

isBinaryObjectType in interface DataFieldMetaData

Returns:

boolean True if it is

isQuotedTextType

public boolean isQuotedTextType()

is the field a quoted text field? cache answer for efficiency, since field type is immutable

Specified by:

isQuotedTextType in interface DataFieldMetaData

Returns:

True if the field is text field

isNumericType

public boolean isNumericType()

is the field a numeric field? cache answer for efficiency, since field type is immutable

Specified by:

isNumericType in interface DataFieldMetaData

Returns:

true if the field is numberic field

isDateType

public boolean isDateType()

is the field a date or time field? cache answer for efficiency, since field type is immutable

Specified by:

isDateType in interface DataFieldMetaData

Returns:

true if the field is date or time field

isDateOnlyType

public boolean isDateOnlyType()

is the field a date or time field? cache answer for efficiency, since field type is immutable

Specified by:

isDateOnlyType in interface DataFieldMetaData

Returns:

true if the field is date field author Yves Henri AMAIZO

isFloatingPointType

public boolean isFloatingPointType()

Specified by:

isFloatingPointType in interface DataFieldMetaData

isTimeType

public boolean isTimeType()

is the field a date or time field? cache answer for efficiency, since field type is immutable

Specified by:

isTimeType in interface DataFieldMetaData

Returns:

true if the field is time field author Yves Henri AMAIZO

isDateTimeType

public boolean isDateTimeType()

is the field a date or time field? cache answer for efficiency, since field type is immutable

Specified by:

isDateTimeType in interface DataFieldMetaData

Returns:

true if the field is dateTime or Timestamp field author Yves Henri AMAIZO

isSecret

public boolean isSecret()

Return the field's secret status

Specified by:

isSecret in interface DataFieldMetaData

Returns:

True if the field is secret, else false if it is not

isHashed

public boolean isHashed()

Return the field's hashed status

Specified by:

isHashed in interface DataFieldMetaData

Returns:

True if the field is secret, else false if it is not

isEncrypted

public boolean isEncrypted()

Return the field's hashed status

Specified by:

isEncrypted in interface DataFieldMetaData

Returns:

True if the field is secret, else false if it is not

isVirtual

public boolean isVirtual()

Is this field a virtual field? E.g. not stored in the database

Specified by:

isVirtual in interface DataFieldMetaData

Returns:

boolean True if the field is virtual, else false

setFilterMethod

public String setFilterMethod(String newMethod)
                       throws DBException

Set's the name of the filter method to be used

Parameters:

newMethod - The name of the filter method to use.

Returns:

old filter just replaced

Throws:

DBException

See Also:

FilterManager

setKey

public void setKey(boolean newKey)

Set this field as a key field (or not)

Specified by:

setKey in interface DataFieldMetaData

Parameters:

newKey - Is this field a key?

setLookupObject

public void setLookupObject(String objectName)

Set the value for the "lookup object" for this field. This is a database object name which can be used to look up valid values for this field by the user. This is used by the standard maintenance forms to create a "Lookup" link alongside the field if this value is set

Specified by:

setLookupObject in interface DataFieldMetaData

Parameters:

objectName - the classname of the lookup object

setLookupField

public void setLookupField(String lookupFieldName)

Sets the value for the "lookup field". This is the field name in the lookup object that maps to this particular field.

Parameters:

lookupFieldName - the name of the field to retrieve.

setLookupDefinition

public void setLookupDefinition(String definitionName)

Sets the value for the "lookup definition" this is the name of the definition for objects implementing the defineable interface.

Parameters:

definitionName - java.lang.String. Depends on the class implementation of the Defineable implementation.

setMultiValued

public void setMultiValued(boolean newMulti)

Set this field to be "multi-valued". A multi-valued field has a specific set of valid values, often from another database object. Any multi-valued field may be used in a call to the getValues method, which will return a hashtable of the valid values for the field and descriptions for those values.

Specified by:

setMultiValued in interface DataFieldMetaData

Parameters:

newMulti - True if the field is multi-valued, false if it is not

See Also:

DBObject.isMultiValued(java.lang.String)

setHashed

public void setHashed(boolean newValue)

Set the field's hashed status. Only works if the field is a string data type (in the future CLOB should be ok too) [This is currently not yet implemented and tested]

Specified by:

setHashed in interface DataFieldMetaData

Parameters:

newValue - true if you want this field hashed.

setEncrypted

public void setEncrypted(boolean newValue)

Set the field's encrypted status

Specified by:

setEncrypted in interface DataFieldMetaData

Parameters:

newValue - new value if you want an encrypted field

setReadOnly

public void setReadOnly()

Set the field as a read-only field. Read only fields are still used against the database, but are not offered for updating when the automatic database maintenance servlet creates a form on the screen. Note this is different from the setAutoIncremented method below, which means this field will not participate in any add or update statement to the database.

Specified by:

setReadOnly in interface DataFieldMetaData

isAutoIncremented

public boolean isAutoIncremented()

Is this field an auto-incremented field?

Specified by:

isAutoIncremented in interface DataFieldMetaData

Returns:

true if this field is autoincremented

setSecret

public void setSecret()

Set the field as a 'secret' field. Secret fields are not shown in listings of data from this database object, and are only available to users with update, add or delete permissions

Specified by:

setSecret in interface DataFieldMetaData

setVirtual

public void setVirtual(boolean newVirtual)

Set this field as a virtual field. A virtual field is part of the object but not stored in the database table.

Specified by:

setVirtual in interface DataFieldMetaData

Parameters:

newVirtual - True to make this object virtual, false if it is not

setMask

public void setMask(org.apache.oro.text.regex.Pattern newMask)

Set a regular expression "mask" for this field that specifies it's valid values. The mask should already be compiled by the regular expression compiler

Specified by:

setMask in interface DataFieldMetaData

Parameters:

newMask - The compiled regular expression mask

setDefaultMask

public void setDefaultMask()
                    throws DBException

Set the field's default mask according to it's type

Throws:

DBException - on error

getMask

public org.apache.oro.text.regex.Pattern getMask()

Get the compiled regular expression for this field.

Specified by:

getMask in interface DataFieldMetaData

Returns:

the precompiled regular expression mask

removeAttribute

public void removeAttribute(String attribName)

Removes an attribute from this Field object.

Specified by:

removeAttribute in interface DataFieldMetaData

Parameters:

attribName - The name of the attribute to remove from this field.

setAttribute

public void setAttribute(String attribName,
                         Object attribValue)

Sets an attribute for this particular field.

Specified by:

setAttribute in interface DataFieldMetaData

Parameters:

attribName - the name of the attribute

attribValue - the value of the attribute by this name

getAttribute

public Object getAttribute(String attribName)

Returns an attribute keyed by name. An attribute is an arbitrary object you can associate with a particular db field.

Specified by:

getAttribute in interface DataFieldMetaData

Parameters:

attribName - the name of the attribute to get

Returns:

java.lang.Object the object associated with this attribute name

getAttributesIterator

public Iterator getAttributesIterator()

Returns a copy of all attributes associated with this field.

Specified by:

getAttributesIterator in interface DataFieldMetaData

Returns:

a valid Iterator to a HashMap OR null if no attributes exist for this field

getAllAttributes

public Set getAllAttributes()

Retrieves all attribute names for this particular data field's metadata

Specified by:

getAllAttributes in interface DataFieldMetaData

Returns:

java.util.Set

getFilterClass

public Class getFilterClass()

getter for Filter Class used in conjuction with get/setFilterMethod

Returns:

class for current filter; NULL if not explicitly set; NULL implies using standard filter

See Also:

getFilterMethod()

setFilterClass

public void setFilterC