package org.springframework;
import javax.naming.Name;
import javax.naming.directory.Attributes;
import java.util.SortedSet;
/**
* Common data access methods for entries in an LDAP tree.
*
* @author Mattias Hellborg Arthursson
* @since 2.0
*/
public interface LdapDataEntry {
/**
* Get the value of a String attribute. If more than one attribute value
* exists for the specified attribute, only the first one will be returned.
* If an attribute has no value, <code>null</code> will be returned.
*
* @param name name of the attribute.
* @return the value of the attribute if it exists, or <code>null</code> if
* the attribute doesn't exist or if it exists but with no value.
* @throws ClassCastException if the value of the entry is not a String.
*/
String getStringAttribute(String name);
/**
* Get the value of an Object attribute. If more than one attribute value
* exists for the specified attribute, only the first one will be returned.
* If an attribute has no value, <code>null</code> will be returned.
*
* @param name name of the attribute.
* @return the attribute value as an object if it exists, or
* <code>null</code> if the attribute doesn't exist or if it exists but with
* no value.
*/
Object getObjectAttribute(String name);
/**
* Check if an Object attribute exists, regardless of whether it has a value
* or not.
*
* @param name name of the attribute
* @return <code>true</code> if the attribute exists, <code>false</code>
* otherwise
*/
boolean attributeExists(String name);
/**
* Set the with the name <code>name</code> to the <code>value</code>.
* If the value is a {@link Name} instance, equality for Distinguished
* Names will be used for calculating attribute modifications.
*
* @param name name of the attribute.
* @param value value to set the attribute to.
* @throws IllegalArgumentException if the value is a {@link Name} instance
* and one or several of the currently present attribute values is <strong>not</strong>
* {@link Name} instances or Strings representing valid Distinguished Names.
*/
void setAttributeValue(String name, Object value);
/**
* Sets a multivalue attribute, disregarding the order of the values.
*
* If value is null or value.length == 0 then the attribute will be removed.
*
* If update mode, changes will be made only if the array has more or less
* objects or if one or more object has changed. Reordering the objects will
* not cause an update.
*
* If the values are {@link Name} instances, equality for Distinguished
* Names will be used for calculating attribute modifications.
*
* @param name The id of the attribute.
* @param values Attribute values.
* @throws IllegalArgumentException if value is a {@link Name} instance
* and one or several of the currently present attribute values is <strong>not</strong>
* {@link Name} instances or Strings representing valid Distinguished Names.
*/
void setAttributeValues(String name, Object[] values);
/**
* Sets a multivalue attribute.
*
* If value is null or value.length == 0 then the attribute will be removed.
*
* If update mode, changes will be made if the array has more or less
* objects or if one or more string has changed.
*
* Reordering the objects will only cause an update if orderMatters is set
* to true.
*
* If the values are {@link Name} instances, equality for Distinguished
* Names will be used for calculating attribute modifications.
* @param name The id of the attribute.
* @param values Attribute values.
* @param orderMatters If <code>true</code>, it will be changed even if data
* was just reordered.
* @throws IllegalArgumentException if value is a {@link Name} instance
* and one or several of the currently present attribute values is <strong>not</strong>
* {@link Name} instances or Strings representing valid Distinguished Names.
*/
void setAttributeValues(String name, Object[] values, boolean orderMatters);
/**
* Add a value to the Attribute with the specified name. If the Attribute
* doesn't exist it will be created. This method makes sure that the there
* will be no duplicates of an added value - it the value exists it will not
* be added again.
*
* If the value is a {@link Name} instance, equality for Distinguished
* Names will be used for calculating attribute modifications.
*
* @param name the name of the Attribute to which the specified value should
* be added.
* @param value the Attribute value to add.
* @throws IllegalArgumentException if value is a {@link Name} instance
* and one or several of the currently present attribute values is <strong>not</strong>
* {@link Name} instances or Strings representing valid Distinguished Names.
*/
void addAttributeValue(String name, Object value);
/**
* Add a value to the Attribute with the specified name. If the Attribute
* doesn't exist it will be created. The <code>addIfDuplicateExists</code>
* parameter controls the handling of duplicates. It <code>false</code>,
* this method makes sure that the there will be no duplicates of an added
* value - it the value exists it will not be added again.
*
* If the value is a {@link Name} instance, equality for Distinguished
* Names will be used for calculating attribute modifications.
*
* @param name the name of the Attribute to which the specified value should
* be added.
* @param value the Attribute value to add.
* @param addIfDuplicateExists <code>true</code> will add the value
* regardless of whether there is an identical value already, allowing for
* duplicate attribute values; <code>false</code> will not add the value if
* it already exists.
* @throws IllegalArgumentException if value is a {@link Name} instance
* and one or several of the currently present attribute values is <strong>not</strong>
* {@link Name} instances or Strings representing valid Distinguished Names.
*/
void addAttributeValue(String name, Object value,
boolean addIfDuplicateExists);
/**
* Remove a value from the Attribute with the specified name. If the
* Attribute doesn't exist, do nothing.
*
* If the value is a {@link Name} instance, equality for Distinguished
* Names will be used for calculating attribute modifications.
*
* @param name the name of the Attribute from which the specified value
* should be removed.
* @param value the value to remove.
* @throws IllegalArgumentException if value is a {@link Name} instance
* and one or several of the currently present attribute values is <strong>not</strong>
* {@link Name} instances or Strings representing valid Distinguished Names.
*/
void removeAttributeValue(String name, Object value);
/**
* Get all values of a String attribute.
*
* @param name name of the attribute.
* @return a (possibly empty) array containing all registered values of the
* attribute as Strings if the attribute is defined or <code>null</code>
* otherwise.
* @throws IllegalArgumentException if any of the attribute values is not a
* String.
*/
String[] getStringAttributes(String name);
/**
* Get all values of an Object attribute.
*
* @param name name of the attribute.
* @return a (possibly empty) array containing all registered values of the
* attribute if the attribute is defined or <code>null</code> otherwise.
* @since 1.3
*/
Object[] getObjectAttributes(String name);
/**
* Get all String values of the attribute as a <code>SortedSet</code>.
*
* @param name name of the attribute.
* @return a <code>SortedSet</code> containing all values of the attribute,
* or <code>null</code> if the attribute does not exist.
* @throws IllegalArgumentException if one of the found attribute values cannot be cast to a String.
*/
SortedSet<String> getAttributeSortedStringSet(String name);
/**
* Returns the DN relative to the base path.
* <b>NB</b>: as of version 2.0 the returned name will be an LdapName instance.
*
* @return The distinguished name of the current context.
*
* @see org.springframework.ldap.core.DirContextAdapter#getNameInNamespace()
*/
Name getDn();
/**
* Get all the Attributes.
*
* @return all the Attributes.
* @since 1.3
*/
Attributes getAttributes();
}