Interface IIOMetadataFormat
- All Known Implementing Classes:
IIOMetadataFormatImpl
public interface IIOMetadataFormat
An object describing the structure of metadata documents returned from IIOMetadata.getAsTree
and passed to IIOMetadata.setFromTree
and mergeTree
. Document structures are described by a set of constraints on the type and number of child elements that may belong to a given parent element type, the names, types, and values of attributes that may belong to an element, and the type and values of Object
reference that may be stored at a node.
N.B: classes that implement this interface should contain a method declared as public static getInstance()
which returns an instance of the class. Commonly, an implementation will construct only a single instance and cache it for future invocations of getInstance
.
In the event that the plugin is provided as part of a named module, that module must export the package containing the implementation class to the
java.desktopmodule via a qualified export. An unqualified export is not recommended unless also needed for some other reason. Failing to export the package will result in access failure at runtime.
The structures that may be described by this class are a subset of those expressible using XML document type definitions (DTDs), with the addition of some basic information on the datatypes of attributes and the ability to store an Object
reference within a node. In the future, XML Schemas could be used to represent these structures, and many others.
The differences between IIOMetadataFormat
-described structures and DTDs are as follows:
- Elements may not contain text or mix text with embedded tags.
- The children of an element must conform to one of a few simple patterns, described in the documentation for the
CHILD_*
constants; - The in-memory representation of an elements may contain a reference to an
Object
. There is no provision for representing such objects textually.
Field Summary
Modifier and Type | Field | Description |
---|---|---|
static int | CHILD_POLICY_ALL | A constant returned by |
static int | CHILD_POLICY_CHOICE | A constant returned by |
static int | CHILD_POLICY_EMPTY | A constant returned by |
static int | CHILD_POLICY_MAX | The largest valid |
static int | CHILD_POLICY_REPEAT | A constant returned by |
static int | CHILD_POLICY_SEQUENCE | A constant returned by |
static int | CHILD_POLICY_SOME | A constant returned by |
static int | DATATYPE_BOOLEAN | A constant returned by |
static int | DATATYPE_DOUBLE | A constant returned by |
static int | DATATYPE_FLOAT | A constant returned by |
static int | DATATYPE_INTEGER | A constant returned by |
static int | DATATYPE_STRING | A constant returned by |
static int | VALUE_ARBITRARY | A constant returned by |
static int | VALUE_ENUMERATION | A constant returned by |
static int | VALUE_LIST | A constant returned by |
static int | VALUE_NONE | A constant returned by |
static int | VALUE_RANGE | A constant returned by |
static int | VALUE_RANGE_MAX_INCLUSIVE | A constant returned by |
static int | VALUE_RANGE_MAX_INCLUSIVE_MASK | A value that may be or'ed with |
static int | VALUE_RANGE_MIN_INCLUSIVE | A constant returned by |
static int | VALUE_RANGE_MIN_INCLUSIVE_MASK | A value that may be or'ed with |
static int | VALUE_RANGE_MIN_MAX_INCLUSIVE | A constant returned by |
Method Summary
Modifier and Type | Method | Description |
---|---|---|
boolean | canNodeAppear(String elementName,
ImageTypeSpecifier imageType) | Returns |
int | getAttributeDataType(String elementName,
String attrName) | Returns one of the constants starting with |
String | getAttributeDefaultValue(String elementName,
String attrName) | Returns the default value of the named attribute, if it is not explicitly present within the named element, as a |
String | getAttributeDescription(String elementName,
String attrName,
Locale locale) | Returns a |
String[] | getAttributeEnumerations(String elementName,
String attrName) | Returns an array of |
int | getAttributeListMaxLength(String elementName,
String attrName) | Returns the maximum number of list items that may be used to define this attribute. |
int | getAttributeListMinLength(String elementName,
String attrName) | Returns the minimum number of list items that may be used to define this attribute. |
String | getAttributeMaxValue(String elementName,
String attrName) | Returns the maximum legal value for the attribute. |
String | getAttributeMinValue(String elementName,
String attrName) | Returns the minimum legal value for the attribute. |
String[] | getAttributeNames(String elementName) | Returns an array of |
int | getAttributeValueType(String elementName,
String attrName) | Returns one of the constants starting with |
String[] | getChildNames(String elementName) | Returns an array of |
int | getChildPolicy(String elementName) | Returns one of the constants starting with |
String | getElementDescription(String elementName,
Locale locale) | Returns a |
int | getElementMaxChildren(String elementName) | Returns the maximum number of children of the named element with child policy |
int | getElementMinChildren(String elementName) | Returns the minimum number of children of the named element with child policy |
int | getObjectArrayMaxLength(String elementName) | Returns the maximum number of array elements that may be used to define the |
int | getObjectArrayMinLength(String elementName) | Returns the minimum number of array elements that may be used to define the |
Class<?> | getObjectClass(String elementName) | Returns the |
Object | getObjectDefaultValue(String elementName) | Returns an |
Object[] | getObjectEnumerations(String elementName) | Returns an array of |
Comparable<?> | getObjectMaxValue(String elementName) | Returns the maximum legal value for the |
Comparable<?> | getObjectMinValue(String elementName) | Returns the minimum legal value for the |
int | getObjectValueType(String elementName) | Returns one of the enumerated values starting with |
String | getRootName() | Returns the name of the root element of the format. |
boolean | isAttributeRequired(String elementName,
String attrName) | Returns |
Field Detail
CHILD_POLICY_EMPTY
static final int CHILD_POLICY_EMPTY
A constant returned by getChildPolicy
to indicate that an element may not have any children. In other words, it is required to be a leaf node.
- See Also:
- Constant Field Values
CHILD_POLICY_ALL
static final int CHILD_POLICY_ALL
A constant returned by getChildPolicy
to indicate that an element must have a single instance of each of its legal child elements, in order. In DTD terms, the contents of the element are defined by a sequence a,b,c,d,...
.
- See Also:
- Constant Field Values
CHILD_POLICY_SOME
static final int CHILD_POLICY_SOME
A constant returned by getChildPolicy
to indicate that an element must have zero or one instance of each of its legal child elements, in order. In DTD terms, the contents of the element are defined by a sequence a?,b?,c?,d?,...
.
- See Also:
- Constant Field Values
CHILD_POLICY_CHOICE
static final int CHILD_POLICY_CHOICE
A constant returned by getChildPolicy
to indicate that an element must have zero or one children, selected from among its legal child elements. In DTD terms, the contents of the element are defined by a selection a|b|c|d|...
.
- See Also:
- Constant Field Values
CHILD_POLICY_SEQUENCE
static final int CHILD_POLICY_SEQUENCE
A constant returned by getChildPolicy
to indicate that an element must have a sequence of instances of any of its legal child elements. In DTD terms, the contents of the element are defined by a sequence (a|b|c|d|...)*
.
- See Also:
- Constant Field Values
CHILD_POLICY_REPEAT
static final int CHILD_POLICY_REPEAT
A constant returned by getChildPolicy
to indicate that an element must have zero or more instances of its unique legal child element. In DTD terms, the contents of the element are defined by a starred expression a*
.
- See Also:
- Constant Field Values
CHILD_POLICY_MAX
static final int CHILD_POLICY_MAX
The largest valid CHILD_POLICY_*
constant, to be used for range checks.
- See Also:
- Constant Field Values
VALUE_NONE
static final int VALUE_NONE
A constant returned by getObjectValueType
to indicate the absence of a user object.
- See Also:
- Constant Field Values
VALUE_ARBITRARY
static final int VALUE_ARBITRARY
A constant returned by getAttributeValueType
and getObjectValueType
to indicate that the attribute or user object may be set a single, arbitrary value.
- See Also:
- Constant Field Values
VALUE_RANGE
static final int VALUE_RANGE
A constant returned by getAttributeValueType
and getObjectValueType
to indicate that the attribute or user object may be set a range of values. Both the minimum and maximum values of the range are exclusive. It is recommended that ranges of integers be inclusive on both ends, and that exclusive ranges be used only for floating-point data.
VALUE_RANGE_MIN_INCLUSIVE_MASK
static final int VALUE_RANGE_MIN_INCLUSIVE_MASK
A value that may be or'ed with VALUE_RANGE
to obtain VALUE_RANGE_MIN_INCLUSIVE
, and with VALUE_RANGE_MAX_INCLUSIVE
to obtain VALUE_RANGE_MIN_MAX_INCLUSIVE
.
Similarly, the value may be and'ed with the value of getAttributeValueType
or getObjectValueType
to determine if the minimum value of the range is inclusive.
- See Also:
- Constant Field Values
VALUE_RANGE_MAX_INCLUSIVE_MASK
static final int VALUE_RANGE_MAX_INCLUSIVE_MASK
A value that may be or'ed with VALUE_RANGE
to obtain VALUE_RANGE_MAX_INCLUSIVE
, and with VALUE_RANGE_MIN_INCLUSIVE
to obtain VALUE_RANGE_MIN_MAX_INCLUSIVE
.
Similarly, the value may be and'ed with the value of getAttributeValueType
or getObjectValueType
to determine if the maximum value of the range is inclusive.
- See Also:
- Constant Field Values
VALUE_RANGE_MIN_INCLUSIVE
static final int VALUE_RANGE_MIN_INCLUSIVE
A constant returned by getAttributeValueType
and getObjectValueType
to indicate that the attribute or user object may be set to a range of values. The minimum (but not the maximum) value of the range is inclusive.
- See Also:
- Constant Field Values
VALUE_RANGE_MAX_INCLUSIVE
static final int VALUE_RANGE_MAX_INCLUSIVE
A constant returned by getAttributeValueType
and getObjectValueType
to indicate that the attribute or user object may be set to a range of values. The maximum (but not the minimum) value of the range is inclusive.
- See Also:
- Constant Field Values
VALUE_RANGE_MIN_MAX_INCLUSIVE
static final int VALUE_RANGE_MIN_MAX_INCLUSIVE
A constant returned by getAttributeValueType
and getObjectValueType
to indicate that the attribute or user object may be set a range of values. Both the minimum and maximum values of the range are inclusive. It is recommended that ranges of integers be inclusive on both ends, and that exclusive ranges be used only for floating-point data.
- See Also:
- Constant Field Values
VALUE_ENUMERATION
static final int VALUE_ENUMERATION
A constant returned by getAttributeValueType
and getObjectValueType
to indicate that the attribute or user object may be set one of a number of enumerated values. In the case of attributes, these values are String
s; for objects, they are Object
s implementing a given class or interface.
Attribute values of type DATATYPE_BOOLEAN
should be marked as enumerations.
- See Also:
- Constant Field Values
VALUE_LIST
static final int VALUE_LIST
A constant returned by getAttributeValueType
and getObjectValueType
to indicate that the attribute or user object may be set to a list or array of values. In the case of attributes, the list will consist of whitespace-separated values within a String
; for objects, an array will be used.
- See Also:
- Constant Field Values
DATATYPE_STRING
static final int DATATYPE_STRING
A constant returned by getAttributeDataType
indicating that the value of an attribute is a general Unicode string.
- See Also:
- Constant Field Values
DATATYPE_BOOLEAN
static final int DATATYPE_BOOLEAN
A constant returned by getAttributeDataType
indicating that the value of an attribute is one of the boolean values 'true' or 'false'. Attribute values of type DATATYPE_BOOLEAN should be marked as enumerations, and the permitted values should be the string literal values "TRUE" or "FALSE", although a plugin may also recognise lower or mixed case equivalents.
- See Also:
- Constant Field Values
DATATYPE_INTEGER
static final int DATATYPE_INTEGER
A constant returned by getAttributeDataType
indicating that the value of an attribute is a string representation of an integer.
- See Also:
- Constant Field Values
DATATYPE_FLOAT
static final int DATATYPE_FLOAT
A constant returned by getAttributeDataType
indicating that the value of an attribute is a string representation of a decimal floating-point number.
- See Also:
- Constant Field Values
DATATYPE_DOUBLE
static final int DATATYPE_DOUBLE
A constant returned by getAttributeDataType
indicating that the value of an attribute is a string representation of a double-precision decimal floating-point number.
- See Also:
- Constant Field Values
Method Detail
getRootName
String getRootName()
Returns the name of the root element of the format.
- Returns:
- a
String
.
canNodeAppear
boolean canNodeAppear(String elementName, ImageTypeSpecifier imageType)
Returns true
if the element (and the subtree below it) is allowed to appear in a metadata document for an image of the given type, defined by an ImageTypeSpecifier
. For example, a metadata document format might contain an element that describes the primary colors of the image, which would not be allowed when writing a grayscale image.
- Parameters:
-
elementName
- the name of the element being queried. -
imageType
- anImageTypeSpecifier
indicating the type of the image that will be associated with the metadata. - Returns:
-
true
if the node is meaningful for images of the given type.
getElementMinChildren
int getElementMinChildren(String elementName)
Returns the minimum number of children of the named element with child policy CHILD_POLICY_REPEAT
. For example, an element representing color primary information might be required to have at least 3 children, one for each primary.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- an
int
. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- if the named element does not have a child policy ofCHILD_POLICY_REPEAT
.
getElementMaxChildren
int getElementMaxChildren(String elementName)
Returns the maximum number of children of the named element with child policy CHILD_POLICY_REPEAT
. For example, an element representing an entry in an 8-bit color palette might be allowed to repeat up to 256 times. A value of Integer.MAX_VALUE
may be used to specify that there is no upper bound.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- an
int
. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- if the named element does not have a child policy ofCHILD_POLICY_REPEAT
.
getElementDescription
String getElementDescription(String elementName, Locale locale)
Returns a String
containing a description of the named element, or null
. The description will be localized for the supplied Locale
if possible.
If locale
is null
, the current default Locale
returned by Locale.getLocale
will be used.
- Parameters:
-
elementName
- the name of the element. -
locale
- theLocale
for which localization will be attempted. - Returns:
- the element description.
- Throws:
-
IllegalArgumentException
- ifelementName
isnull
, or is not a legal element name for this format.
getChildPolicy
int getChildPolicy(String elementName)
Returns one of the constants starting with CHILD_POLICY_
, indicating the legal pattern of children for the named element.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- one of the
CHILD_POLICY_*
constants. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format.
getChildNames
String[] getChildNames(String elementName)
Returns an array of String
s indicating the names of the element which are allowed to be children of the named element, in the order in which they should appear. If the element cannot have children, null
is returned.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- an array of
String
s, or null. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format.
getAttributeNames
String[] getAttributeNames(String elementName)
Returns an array of String
s listing the names of the attributes that may be associated with the named element.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- an array of
String
s. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format.
getAttributeValueType
int getAttributeValueType(String elementName, String attrName)
Returns one of the constants starting with VALUE_
, indicating whether the values of the given attribute within the named element are arbitrary, constrained to lie within a specified range, constrained to be one of a set of enumerated values, or are a whitespace-separated list of arbitrary values.
- Parameters:
-
elementName
- the name of the element being queried. -
attrName
- the name of the attribute being queried. - Returns:
- one of the
VALUE_*
constants. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- ifattrName
isnull
or is not a legal attribute name for this element.
getAttributeDataType
int getAttributeDataType(String elementName, String attrName)
Returns one of the constants starting with DATATYPE_
, indicating the format and interpretation of the value of the given attribute within the named element. If getAttributeValueType
returns VALUE_LIST
, then the legal value is a whitespace-spearated list of values of the returned datatype.
- Parameters:
-
elementName
- the name of the element being queried. -
attrName
- the name of the attribute being queried. - Returns:
- one of the
DATATYPE_*
constants. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- ifattrName
isnull
or is not a legal attribute name for this element.
isAttributeRequired
boolean isAttributeRequired(String elementName, String attrName)
Returns true
if the named attribute must be present within the named element.
- Parameters:
-
elementName
- the name of the element being queried. -
attrName
- the name of the attribute being queried. - Returns:
-
true
if the attribute must be present. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- ifattrName
isnull
or is not a legal attribute name for this element.
getAttributeDefaultValue
String getAttributeDefaultValue(String elementName, String attrName)
Returns the default value of the named attribute, if it is not explicitly present within the named element, as a String
, or null
if no default value is available.
- Parameters:
-
elementName
- the name of the element being queried. -
attrName
- the name of the attribute being queried. - Returns:
- a
String
containing the default value, ornull
. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- ifattrName
isnull
or is not a legal attribute name for this element.
getAttributeEnumerations
String[] getAttributeEnumerations(String elementName, String attrName)
Returns an array of String
s containing the legal enumerated values for the given attribute within the named element. This method should only be called if getAttributeValueType
returns VALUE_ENUMERATION
.
- Parameters:
-
elementName
- the name of the element being queried. -
attrName
- the name of the attribute being queried. - Returns:
- an array of
String
s. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- ifattrName
isnull
or is not a legal attribute name for this element. -
IllegalArgumentException
- if the given attribute is not defined as an enumeration.
getAttributeMinValue
String getAttributeMinValue(String elementName, String attrName)
Returns the minimum legal value for the attribute. Whether this value is inclusive or exclusive may be determined by the value of getAttributeValueType
. The value is returned as a String
; its interpretation is dependent on the value of getAttributeDataType
. This method should only be called if getAttributeValueType
returns VALUE_RANGE_*
.
- Parameters:
-
elementName
- the name of the element being queried. -
attrName
- the name of the attribute being queried. - Returns:
- a
String
containing the smallest legal value for the attribute. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- ifattrName
isnull
or is not a legal attribute name for this element. -
IllegalArgumentException
- if the given attribute is not defined as a range.
getAttributeMaxValue
String getAttributeMaxValue(String elementName, String attrName)
Returns the maximum legal value for the attribute. Whether this value is inclusive or exclusive may be determined by the value of getAttributeValueType
. The value is returned as a String
; its interpretation is dependent on the value of getAttributeDataType
. This method should only be called if getAttributeValueType
returns VALUE_RANGE_*
.
- Parameters:
-
elementName
- the name of the element being queried, as aString
. -
attrName
- the name of the attribute being queried. - Returns:
- a
String
containing the largest legal value for the attribute. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- ifattrName
isnull
or is not a legal attribute name for this element. -
IllegalArgumentException
- if the given attribute is not defined as a range.
getAttributeListMinLength
int getAttributeListMinLength(String elementName, String attrName)
Returns the minimum number of list items that may be used to define this attribute. The attribute itself is defined as a String
containing multiple whitespace-separated items. This method should only be called if getAttributeValueType
returns VALUE_LIST
.
- Parameters:
-
elementName
- the name of the element being queried. -
attrName
- the name of the attribute being queried. - Returns:
- the smallest legal number of list items for the attribute.
- Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- ifattrName
isnull
or is not a legal attribute name for this element. -
IllegalArgumentException
- if the given attribute is not defined as a list.
getAttributeListMaxLength
int getAttributeListMaxLength(String elementName, String attrName)
Returns the maximum number of list items that may be used to define this attribute. A value of Integer.MAX_VALUE
may be used to specify that there is no upper bound. The attribute itself is defined as a String
containing multiple whitespace-separated items. This method should only be called if getAttributeValueType
returns VALUE_LIST
.
- Parameters:
-
elementName
- the name of the element being queried. -
attrName
- the name of the attribute being queried. - Returns:
- the largest legal number of list items for the attribute.
- Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- ifattrName
isnull
or is not a legal attribute name for this element. -
IllegalArgumentException
- if the given attribute is not defined as a list.
getAttributeDescription
String getAttributeDescription(String elementName, String attrName, Locale locale)
Returns a String
containing a description of the named attribute, or null
. The description will be localized for the supplied Locale
if possible.
If locale
is null
, the current default Locale
returned by Locale.getLocale
will be used.
- Parameters:
-
elementName
- the name of the element. -
attrName
- the name of the attribute. -
locale
- theLocale
for which localization will be attempted. - Returns:
- the attribute description.
- Throws:
-
IllegalArgumentException
- ifelementName
isnull
, or is not a legal element name for this format. -
IllegalArgumentException
- ifattrName
isnull
or is not a legal attribute name for this element.
getObjectValueType
int getObjectValueType(String elementName)
Returns one of the enumerated values starting with VALUE_
, indicating the type of values (enumeration, range, or array) that are allowed for the Object
reference. If no object value can be stored within the given element, the result of this method will be VALUE_NONE
.
Object
references whose legal values are defined as a range must implement the Comparable
interface.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- one of the
VALUE_*
constants. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. - See Also:
Comparable
getObjectClass
Class<?> getObjectClass(String elementName)
Returns the Class
type of the Object
reference stored within the element. If this element may not contain an Object
reference, an IllegalArgumentException
will be thrown. If the class type is an array, this field indicates the underlying class type (e.g, for an array of int
s, this method would return int.class
).
Object
references whose legal values are defined as a range must implement the Comparable
interface.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- a
Class
object. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- if the named element cannot contain an object value (i.e., ifgetObjectValueType(elementName) == VALUE_NONE
).
getObjectDefaultValue
Object getObjectDefaultValue(String elementName)
Returns an Object
s containing the default value for the Object
reference within the named element.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- an
Object
. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- if the named element cannot contain an object value (i.e., ifgetObjectValueType(elementName) == VALUE_NONE
).
getObjectEnumerations
Object[] getObjectEnumerations(String elementName)
Returns an array of Object
s containing the legal enumerated values for the Object
reference within the named element. This method should only be called if getObjectValueType
returns VALUE_ENUMERATION
.
The Object
associated with a node that accepts enumerated values must be equal to one of the values returned by this method, as defined by the ==
operator (as opposed to the Object.equals
method).
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- an array of
Object
s. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- if the named element cannot contain an object value (i.e., ifgetObjectValueType(elementName) == VALUE_NONE
). -
IllegalArgumentException
- if theObject
is not defined as an enumeration.
getObjectMinValue
Comparable<?> getObjectMinValue(String elementName)
Returns the minimum legal value for the Object
reference within the named element. Whether this value is inclusive or exclusive may be determined by the value of getObjectValueType
. This method should only be called if getObjectValueType
returns one of the constants starting with VALUE_RANGE
.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- the smallest legal value for the attribute.
- Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- if the named element cannot contain an object value (i.e., ifgetObjectValueType(elementName) == VALUE_NONE
). -
IllegalArgumentException
- if theObject
is not defined as a range.
getObjectMaxValue
Comparable<?> getObjectMaxValue(String elementName)
Returns the maximum legal value for the Object
reference within the named element. Whether this value is inclusive or exclusive may be determined by the value of getObjectValueType
. This method should only be called if getObjectValueType
returns one of the constants starting with VALUE_RANGE
.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- the smallest legal value for the attribute.
- Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- if the named element cannot contain an object value (i.e., ifgetObjectValueType(elementName) == VALUE_NONE
). -
IllegalArgumentException
- if theObject
is not defined as a range.
getObjectArrayMinLength
int getObjectArrayMinLength(String elementName)
Returns the minimum number of array elements that may be used to define the Object
reference within the named element. This method should only be called if getObjectValueType
returns VALUE_LIST
.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- the smallest valid array length for the
Object
reference. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- if the named element cannot contain an object value (i.e., ifgetObjectValueType(elementName) == VALUE_NONE
). -
IllegalArgumentException
- if theObject
is not an array.
getObjectArrayMaxLength
int getObjectArrayMaxLength(String elementName)
Returns the maximum number of array elements that may be used to define the Object
reference within the named element. A value of Integer.MAX_VALUE
may be used to specify that there is no upper bound. This method should only be called if getObjectValueType
returns VALUE_LIST
.
- Parameters:
-
elementName
- the name of the element being queried. - Returns:
- the largest valid array length for the
Object
reference. - Throws:
-
IllegalArgumentException
- ifelementName
isnull
or is not a legal element name for this format. -
IllegalArgumentException
- if the named element cannot contain an object value (i.e., ifgetObjectValueType(elementName) == VALUE_NONE
). -
IllegalArgumentException
- if theObject
is not an array.