PoiCategoryManager (mapsforge-poi 0.16.0 API)

All Known Implementing Classes:

AbstractPoiCategoryManager
```
public interface PoiCategoryManager
```
A category manager is a storage for PoiCategorys. It manages the categories' hierarchy in a tree structure. Adding and deleting categories should be done via this interface.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`PoiCategory`	`getPoiCategoryByID(int id)`	Returns a category given by its ID or throws an exception if this category does not exist.
`PoiCategory`	`getPoiCategoryByTitle(java.lang.String title)`	Returns a category given by unique title or throws an exception if this category does not exist.
`PoiCategory`	`getRootCategory()`	Returns the category tree's root.

- Method Detail
  - getPoiCategoryByID
```
PoiCategory getPoiCategoryByID(int id)
                        throws UnknownPoiCategoryException
```
    Returns a category given by its ID or throws an exception if this category does not exist.
    
    Parameters:
    
    id - The category's ID.
    
    Returns:
    
    The category having this ID or null.
    
    Throws:
    
    UnknownPoiCategoryException - if the category has not been added to the PoiCategoryManager.
  - getPoiCategoryByTitle
```
PoiCategory getPoiCategoryByTitle(java.lang.String title)
                           throws UnknownPoiCategoryException
```
    Returns a category given by unique title or throws an exception if this category does not exist.
    
    Parameters:
    
    title - The category's title
    
    Returns:
    
    The category c with c.title.equalsIgnoreCase(title).
    
    Throws:
    
    UnknownPoiCategoryException - if the category has not been added to the PoiCategoryManager.
  - getRootCategory
```
PoiCategory getRootCategory()
                     throws UnknownPoiCategoryException
```
    Returns the category tree's root.
    
    Returns:
    
    The tree's root category or null if the tree is empty.
    
    Throws:
    
    UnknownPoiCategoryException - if the category has not been added to the PoiCategoryManager.