All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

Alias
```
public class Attribute
extends DAPNode
```
An Attribute holds information about a single attribute in an AttributeTable. It has a type, and contains either a Vector of Strings containing the attribute's values, or a reference to an AttributeTable, if the Attribute is a container. An Attribute may also be created as an alias pointing to another Attribute of any type, including container.

See Also:

AttributeTable, Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class opendap.dap.DAPNode
  DAPNode.CloneMap

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`ALIAS`	Alias attribute type.
`static int`	`BYTE`	Byte attribute type.
`static int`	`CONTAINER`	Container attribute type.
`static int`	`FLOAT32`	Float32 attribute type.
`static int`	`FLOAT64`	Float64 attribute type.
`static int`	`INT16`	Int16 attribute type.
`static int`	`INT32`	Int32 attribute type.
`static int`	`STRING`	String attribute type.
`static int`	`UINT16`	UInt16 attribute type.
`static int`	`UINT32`	UInt32 attribute type.
`static int`	`UNKNOWN`	Unknown attribute type.
`static int`	`URL`	URL attribute type.

Fields inherited from class opendap.dap.DAPNode
_nameClear, _nameEncoded, log

Constructor Summary

Constructors
Constructor	Description
`Attribute(int type, String clearname, String value, boolean check)`	Construct an `Attribute` with the given type and initial value.
`Attribute(String clearname, int type)`	Construct an empty attribute with the given type.
`Attribute(String clearname, AttributeTable container)`	Construct a container attribute.
`Attribute(AttributeTable container)`	Deprecated. Use the ctor with the name.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`appendValue(String value)`	Append a value to this attribute.
`void`	`appendValue(String value, boolean check)`	Append a value to this attribute.
`Attribute`	`cloneDAG(DAPNode.CloneMap map)`	Returns a clone of this `Attribute`.
`void`	`deleteValueAt(int index)`	Remove the `i`'th `String` from this attribute.
`AttributeTable`	`getContainer()`	Returns the `AttributeTable` container.
`AttributeTable`	`getContainerN()`	Returns the `AttributeTable` container.
`int`	`getNumVal()`	Returns the nummber of values held in this attribute.
`int`	`getType()`	Returns the attribute type constant.
`String`	`getTypeString()`	Returns the attribute type as a `String`.
`static int`	`getTypeVal(String s)`	Returns the attribute type as a `String`.
`String`	`getValueAt(int index)`	Returns the attribute value at `index`.
`String`	`getValueAtN(int index)`	Returns the attribute value at `index`, or null if a container
`List<String>`	`getValues()`	Returns the values of this attribute as an `Enumeration` of `String`.
`Iterator<String>`	`getValuesIterator()`	Returns the values of this attribute as an `Iterator` of `String`.
`boolean`	`isAlias()`	Returns true if the attribute is an alias.
`boolean`	`isContainer()`	Returns true if the attribute is a container.
`void`	`print(OutputStream os)`	Print the attribute on the given `OutputStream` with four spaces of indentation.
`void`	`print(OutputStream os, String pad)`	Print the attribute on the given `OutputStream`.
`void`	`print(PrintWriter os)`	Print the attribute on the given `PrintWriter` with four spaces of indentation.
`void`	`print(PrintWriter os, String pad)`
`void`	`printXML(OutputStream os)`
`void`	`printXML(OutputStream os, String pad)`
`void`	`printXML(PrintWriter pw)`
`void`	`printXML(PrintWriter pw, String pad)`
`void`	`printXML(PrintWriter pw, String pad, boolean constrained)`

Methods inherited from class opendap.dap.DAPNode
clone, cloneDAG, getClearName, getEncodedName, getParent, isProject, setClearName, setEncodedName, setParent, setProject, setProject, setProjected

Methods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - UNKNOWN
```
public static final int UNKNOWN
```
    Unknown attribute type. This is currently unused.
    
    See Also:
    
    Constant Field Values
  - ALIAS
```
public static final int ALIAS
```
    Alias attribute type. This is an attribute that works like a UNIX style soft link to another attribute.
    
    See Also:
    
    Constant Field Values
  - CONTAINER
```
public static final int CONTAINER
```
    Container attribute type. This Attribute holds an AttributeTable.
    
    See Also:
    
    Constant Field Values
  - BYTE
```
public static final int BYTE
```
    Byte attribute type. Holds an unsigned Byte.
    
    See Also:
    
    Constant Field Values
  - INT16
```
public static final int INT16
```
    Int16 attribute type. Holds a signed Short.
    
    See Also:
    
    Constant Field Values
  - UINT16
```
public static final int UINT16
```
    UInt16 attribute type. Holds an unsigned Short.
    
    See Also:
    
    Constant Field Values
  - INT32
```
public static final int INT32
```
    Int32 attribute type. Holds a signed Integer.
    
    See Also:
    
    Constant Field Values
  - UINT32
```
public static final int UINT32
```
    UInt32 attribute type. Holds an unsigned Integer.
    
    See Also:
    
    Constant Field Values
  - FLOAT32
```
public static final int FLOAT32
```
    Float32 attribute type. Holds a Float.
    
    See Also:
    
    Constant Field Values
  - FLOAT64
```
public static final int FLOAT64
```
    Float64 attribute type. Holds a Double.
    
    See Also:
    
    Constant Field Values
  - STRING
```
public static final int STRING
```
    String attribute type. Holds a String.
    
    See Also:
    
    Constant Field Values
  - URL
```
public static final int URL
```
    URL attribute type. Holds a String representing a URL.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Attribute
```
public Attribute(AttributeTable container)
```
    Deprecated.
    Use the ctor with the name.
    
    Construct a container attribute.
    
    Parameters:
    
    container - the AttributeTable container.
  - Attribute
```
public Attribute(int type,
                 String clearname,
                 String value,
                 boolean check)
          throws AttributeBadValueException
```
    Construct an Attribute with the given type and initial value.
    
    Parameters:
    
    type - the type of attribute to create. Use one of the type constants defined by this class.
    
    clearname - the name of the attribute.
    
    value - the initial value of this attribute. Use the appendValue method to create a vector of values.
    
    check - if true, check the value and throw AttributeBadValueException if it's not valid; if false do not check its validity.
    
    Throws:
    
    AttributeBadValueException - thrown if the value is not a legal member of type
  - Attribute
```
public Attribute(String clearname,
                 AttributeTable container)
```
    Construct a container attribute.
    
    Parameters:
    
    container - the AttributeTable container.
  - Attribute
```
public Attribute(String clearname,
                 int type)
          throws IllegalArgumentException
```
    Construct an empty attribute with the given type.
    
    Parameters:
    
    type - the type of attribute to create. Use one of the type constants defined by this class, other than CONTAINER.
    
    Throws:
    
    IllegalArgumentException - thrown if type is CONTAINER. To construct an empty container attribute, first construct and empty AttributeTable and then use that to construct the Attribute.
- Method Detail
  - getTypeString
```
public final String getTypeString()
```
    Returns the attribute type as a String.
    
    Returns:
    
    the attribute type String.
  - getTypeVal
```
public static final int getTypeVal(String s)
```
    Returns the attribute type as a String.
    
    Returns:
    
    the attribute type String.
  - getType
```
public int getType()
```
    Returns the attribute type constant.
    
    Returns:
    
    the attribute type constant.
  - isContainer
```
public boolean isContainer()
```
    Returns true if the attribute is a container.
    
    Returns:
    
    true if the attribute is a container.
  - isAlias
```
public boolean isAlias()
```
    Returns true if the attribute is an alias.
    
    Returns:
    
    true if the attribute is an alias.
  - getContainer
```
public AttributeTable getContainer()
                            throws NoSuchAttributeException
```
    Returns the AttributeTable container.
    
    Returns:
    
    the AttributeTable container.
    
    Throws:
    
    NoSuchAttributeException - If the instance of Attribute on which it is called is not a container.
  - getContainerN
```
@Nullable
public AttributeTable getContainerN()
```
    Returns the AttributeTable container.
    
    Returns:
    
    the AttributeTable container, or null if not a container.
  - getValues
```
public List<String> getValues()
                       throws NoSuchAttributeException
```
    Returns the values of this attribute as an Enumeration of String.
    
    Returns:
    
    an Enumeration of String.
    
    Throws:
    
    NoSuchAttributeException
  - getValuesIterator
```
public Iterator<String> getValuesIterator()
```
    Returns the values of this attribute as an Iterator of String.
  - getNumVal
```
public int getNumVal()
              throws NoSuchAttributeException
```
    Returns the nummber of values held in this attribute.
    
    Throws:
    
    NoSuchAttributeException
  - getValueAt
```
public String getValueAt(int index)
                  throws NoSuchAttributeException
```
    Returns the attribute value at index.
    
    Throws:
    
    NoSuchAttributeException
  - getValueAtN
```
@Nullable
public String getValueAtN(int index)
```
    Returns the attribute value at index, or null if a container
  - appendValue
```
public void appendValue(String value)
                 throws NoSuchAttributeException,
                        AttributeBadValueException
```
    Append a value to this attribute. Always checks the validity of the attribute's value.
    
    Parameters:
    
    value - the attribute String to add.
    
    Throws:
    
    AttributeBadValueException - thrown if the value is not a legal member of type
    
    NoSuchAttributeException
  - appendValue
```
public void appendValue(String value,
                        boolean check)
                 throws NoSuchAttributeException,
                        AttributeBadValueException
```
    Append a value to this attribute.
    
    Parameters:
    
    value - the attribute String to add.
    
    check - if true, check the validity of he attribute's value, if false don't.
    
    Throws:
    
    AttributeBadValueException - thrown if the value is not a legal member of type
    
    NoSuchAttributeException
  - deleteValueAt
```
public void deleteValueAt(int index)
                   throws AttributeBadValueException,
                          NoSuchAttributeException
```
    Remove the i'th String from this attribute.
    
    Parameters:
    
    index - the index of the value to remove.
    
    Throws:
    
    AttributeBadValueException
    
    NoSuchAttributeException
  - print
```
public void print(PrintWriter os,
                  String pad)
```
  - print
```
public final void print(OutputStream os,
                        String pad)
```
    Print the attribute on the given OutputStream.
    
    Parameters:
    
    os - the OutputStream to use for output.
    
    pad - the number of spaces to indent each line.
  - print
```
public final void print(PrintWriter os)
```
    Print the attribute on the given PrintWriter with four spaces of indentation.
    
    Parameters:
    
    os - the PrintWriter to use for output.
  - print
```
public final void print(OutputStream os)
```
    Print the attribute on the given OutputStream with four spaces of indentation.
    
    Parameters:
    
    os - the OutputStream to use for output.
  - printXML
```
public void printXML(OutputStream os)
```
  - printXML
```
public void printXML(OutputStream os,
                     String pad)
```
  - printXML
```
public void printXML(PrintWriter pw)
```
  - printXML
```
public void printXML(PrintWriter pw,
                     String pad)
```
  - printXML
```
public void printXML(PrintWriter pw,
                     String pad,
                     boolean constrained)
```
  - cloneDAG
```
public Attribute cloneDAG(DAPNode.CloneMap map)
                   throws CloneNotSupportedException
```
    Returns a clone of this Attribute. See DAPNode.cloneDag()
    
    Overrides:
    
    cloneDAG in class DAPNode
    
    Parameters:
    
    map - track previously cloned nodes
    
    Returns:
    
    a clone of this Attribute.
    
    Throws:
    
    CloneNotSupportedException

Class Attribute

Nested Class Summary

Nested classes/interfaces inherited from class opendap.dap.DAPNode

Field Summary

Fields inherited from class opendap.dap.DAPNode

Constructor Summary

Method Summary

Methods inherited from class opendap.dap.DAPNode

Methods inherited from class java.lang.Object

Field Detail

UNKNOWN

ALIAS

CONTAINER

BYTE

INT16

UINT16

INT32

UINT32

FLOAT32

FLOAT64

STRING

URL

Constructor Detail

Attribute

Attribute

Attribute

Attribute

Method Detail

getTypeString

getTypeVal

getType

isContainer

isAlias

getContainer

getContainerN

getValues

getValuesIterator

getNumVal

getValueAt

getValueAtN

appendValue

appendValue

deleteValueAt

print

print

print

print

printXML

printXML

printXML

printXML

printXML

cloneDAG