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WebLogic Server 8.1 API Reference

## weblogic.security.service
Class ResourceBase

    java.lang.Object
      |
      +--weblogic.security.service.ResourceBase

Direct Known Subclasses:
  AdminResource, ApplicationResource, COMResource, EISResource, EJBResource, JDBCResource, JMSResource, JNDIResource, RealmAdapterAclResource, RemoteResource, ServerResource, URLResource, WebResource, WebServiceResource

public abstract class ResourceBase
extends java.lang.Object
implements SelfDescribingResource

The `ResourceBase` class is an abstract base class for all the specific resource types and facilitates the model for the extending resources. Each resource is represented by its type and a set of attributes, and each instance is identified by a unique long identifier that is computed with a hash function from the resource type and the attributes.

The `ResourceBase` class contains the BEA-provided implementations of the `getKeys`, `getFields`, `getID`, and `toString` methods.

The `ResourceBase` class contains an array of values for which the extending classes are expected to provide a corresponding array of keys. (See the `getkeys` methods in each extending class for more information).

Author:
  Copyright © 2004 BEA Systems, Inc. All Rights Reserved.
See Also:
  Serialized Form

Field Summary
`protected long` | `id` Resource long hashcode.
`protected int` | `length` The valid length of the values array.
`protected static Resource` | `NO_PARENT`
`protected Resource` | `parent`
`protected java.lang.String` | `resStr`
`protected static boolean` | `SCOPE_RESOURCE_ACTION`
`protected java.lang.String[]` | `values` The array of values for which the extending classes are expected to provide a corresponding array of keys.

Constructor Summary
`ResourceBase()` Creates an empty `ResourceBase`.

Method Summary
`protected static java.lang.StringBuffer` | `appendArrayValue(java.lang.StringBuffer buf, java.lang.String[] values, int len)` Appends the array of values to the buffer as a comma-separated list of values in curly parentheses.
`protected static java.lang.StringBuffer` | `appendValue(java.lang.StringBuffer buf, java.lang.String value)` Appends the value to the buffer, escaping special characters with '\' and treating `null` strings as empty strings.
`boolean` | `equals(java.lang.Object obj)` Compares this resource to the resource in the specified object.
`int` | `getFieldType(java.lang.String fieldName)`
`long` | `getID()` Gets a 64-bit hashcode for a resource.
`abstract java.lang.String[]` | `getKeys()` Gets keys for the resource.
`Resource` | `getParentResource()` Gets a `Resource` object that represents the parent of the current resource.
`int` | `getRepeatingFieldIndex()`
`int` | `getRepeatingFieldTerminatingIndex()`
`java.lang.String[]` | `getValues()` Gets the values corresponding to the keys of this resource's type.
`int` | `hashCode()`
`protected void` | `init(java.lang.String[] values, int len, long seed)` Initializes the resource with the array of values, and computes the resource ID as a hash function of the resource type and each of its non-null values.
`protected void` | `init(java.lang.String[] values, long seed)` Initializes the resource with the array of values.
`protected Resource` | `makeParent()` Creates a `ResourceBase` object that represents the parent of the current resource.
`void` | `reset()` Deprecated. As of 04/01/02.
`java.lang.String` | `toString()` Returns a string representation of the resource.
`protected void` | `writeResourceString(java.lang.StringBuffer buf)` Writes a string representation of the resource to buffer.

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

Field Detail

### SCOPE_RESOURCE_ACTION

    protected static final boolean SCOPE_RESOURCE_ACTION

### NO_PARENT

    protected static final Resource NO_PARENT

### parent

    protected Resource parent

### resStr

    protected java.lang.String resStr

### values

    protected java.lang.String[] values

  The array of values for which the extending classes are expected to provide a corresponding array of keys.

### length

    protected int length

  The valid length of the values array. This variable eliminates the need to make copies to shorter arrays.

### id

    protected long id

  Resource long hashcode.

Constructor Detail

### ResourceBase

    public ResourceBase()

  Creates an empty `ResourceBase`.

Method Detail

### equals

    public boolean equals(java.lang.Object obj)

  Compares this resource to the resource in the specified object.

  Parameters:
    `obj` - the other resource with which to compare this resource.

  Returns:
    `TRUE` if the resource passed in matches this resource, and `FALSE` otherwise.

  Overrides:
    equals in class java.lang.Object
  See Also:
    `Object.equals(Object)`

### toString

    public java.lang.String toString()

  Returns a string representation of the resource.

  Each type of resource is first printed in angled brackets. Then, each key is printed, in order, along with it's value. The keys are comma-separated. Values that are lists are comma-separated and delineated by open and close curly braces. Each value is printed as is, except that commas (,), open braces ({), close braces (}), and back slashes (\) are each escaped with a backslash.

  For more information about the `toString` formats for specific resource types, see the descriptions in the extending classes.

  Note: Because this method produces a result based on the concatenation of strings, it may be expensive in terms of performance.

  Returns:
    the resource, represented as a String.

  Overrides:
    toString in class java.lang.Object

### writeResourceString

    protected void writeResourceString(java.lang.StringBuffer buf)

  Writes a string representation of the resource to buffer.

  Subclasses should override this method if their string representation is different.

  Parameters:
    `buf` - buffer to write to.

### getParentResource

    public Resource getParentResource()

  Gets a `Resource` object that represents the parent of the current resource. If the resource does not have a parent, the value of `null` must be returned.

  Returns:
    the `Resource` object of the parent resource.

### makeParent

    protected Resource makeParent()

  Creates a `ResourceBase` object that represents the parent of the current resource. If the resource does not have a parent, the value of `null` must be returned.

  Subclasses should override this method.

  Returns:
    the `Resource` object of the parent resource.

### getID

    public long getID()

  Gets a 64-bit hashcode for a resource.

  This method is a hash operation that is calculated and cached within the resource itself. Note: This method is not guaranteed between service packs or future releases. Therefore, you should not store `getID` values in your database.

  Returns:
    the ID value for the resource, represented as a long.

### hashCode

    public int hashCode()

  Returns:
    the hashcode value for the resource.

  Overrides:
    hashCode in class java.lang.Object
  See Also:
    `Object.hashCode()`

### reset

    public void reset()

  Deprecated. As of 04/01/02.

  Clears all the values from the resource.

### getKeys

    public abstract java.lang.String[] getKeys()

  Gets keys for the resource.

  Returns:
    an array of Strings containing the resource's keys.

### getFieldType

    public int getFieldType(java.lang.String fieldName)

  Specified by:
    getFieldType in interface SelfDescribingResource

### getRepeatingFieldIndex

    public int getRepeatingFieldIndex()

  Specified by:
    getRepeatingFieldIndex in interface SelfDescribingResource

### getRepeatingFieldTerminatingIndex

    public int getRepeatingFieldTerminatingIndex()

  Specified by:
    getRepeatingFieldTerminatingIndex in interface SelfDescribingResource

### getValues

    public java.lang.String[] getValues()

  Gets the values corresponding to the keys of this resource's type. This array may be shorter than the array returned by `getKeys`, because the latter depends only on the type of the resource.

  This returns a copy of the original array so copying and modifying the return value will have no affect on the Resource.

  If the Resource has no non-null values then this will return an array of zero lenght.

  Returns:
    a potentially zero-length array of Strings representing the keys' values for the resource.

### appendValue

    protected static java.lang.StringBuffer appendValue(java.lang.StringBuffer buf,
                                                        java.lang.String value)

  Appends the value to the buffer, escaping special characters with '\' and treating `null` strings as empty strings.

  Parameters:
    `buf` - `StringBuffer` to which the value should be appended.

    `value` - the string value to append to the `StringBuffer`.

  Returns:
    `StringBuffer` with appended values.

### appendArrayValue

    protected static java.lang.StringBuffer appendArrayValue(java.lang.StringBuffer buf,
                                                             java.lang.String[] values,
                                                             int len)

  Appends the array of values to the buffer as a comma-separated list of values in curly parentheses.

  Parameters:
    `buf` - `StringBuffer` to which the value should be appended.

    `values` - the array of string values to append to the `StringBuffer`.

    `len` - the number of values from the array that should be appended.

  Returns:
    `StringBuffer` with appended values.

### init

    protected void init(java.lang.String[] values,
                        long seed)

  Initializes the resource with the array of values.

  Parameters:
    `values` - the array of string values with which the resource should be initialized.

    `seed` - the seed for the hash function.

### init

    protected void init(java.lang.String[] values,
                        int len,
                        long seed)

  Initializes the resource with the array of values, and computes the resource ID as a hash function of the resource type and each of its non-null values.

  Parameters:
    `values` - the array of string values with which the resource should be initialized.

    `len` - the number of values from the array that apply to this resource.

    `seed` - the seed for the hash function.

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