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    • org.openl.rules.ui.tree.TreeNodeBuilder Maven / Gradle / Ivy

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    package org.openl.rules.ui.tree;

/**
 * Provides methods for tree node building. 
 *
 * @param  type of node object
 */
public interface TreeNodeBuilder {
    
    /**
     * Generates comparable key that will be used for detecting similar nodes.
     * 
     * @param object The object for key generating.
     * @return Key for object.
     */
    Comparable makeKey(T object);
    
    /**
     * @param object The object that will be displayed in the tree
     * @param i Order number of object.
     * @return TreeNode generated for the object.
     */
    ITreeNode makeNode(T object, int i);

    /**
     * Generates comparable key for similar keys. It only used if
     * isUnique==true. Then we have to create nodes for each
     * similar object. The key will be generated with using of order number of
     * key. (The first node have number 0, the second -
     * 2, the third 3 etc.)
     * 
     * @param object The object for displaying in the tree.
     * @param i Order number of object.
     * @return Key for object.
     */
    Comparable makeKey(T object, int i);

    /**
     * @param object The object that can be processed by tree builder.
     * @return true if specified object must be processed by tree
     *         builder false if current tree builder must skip
     *         object.
     */
    boolean isBuilderApplicableForObject(T object);

    /**
     * @param object The object to check.
     * @return true if node is obligatory to display even if the
     *         tree already has element with similar key
     */
    boolean isUnique(T object);
}
    
    
    
    

    




    
    
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