com.fireflysource.common.collection.trie.Trie Maven / Gradle / Ivy
package com.fireflysource.common.collection.trie;
import java.nio.ByteBuffer;
import java.util.Set;
/**
* A Trie String lookup data structure.
*
* @param the Trie entry type
*/
public interface Trie {
/**
* Put an entry into the Trie
*
* @param s The key for the entry
* @param v The value of the entry
* @return True if the Trie had capacity to add the field.
*/
boolean put(String s, V v);
/**
* Put a value as both a key and a value.
*
* @param v The value and key
* @return True if the Trie had capacity to add the field.
*/
boolean put(V v);
V remove(String s);
/**
* Get an exact match from a String key
*
* @param s The key
* @return the value for the string key
*/
V get(String s);
/**
* Get an exact match from a String key
*
* @param s The key
* @param offset The offset within the string of the key
* @param len the length of the key
* @return the value for the string / offset / length
*/
V get(String s, int offset, int len);
/**
* Get an exact match from a segment of a ByteBuufer as key
*
* @param b The buffer
* @return The value or null if not found
*/
V get(ByteBuffer b);
/**
* Get an exact match from a segment of a ByteBuufer as key
*
* @param b The buffer
* @param offset The offset within the buffer of the key
* @param len the length of the key
* @return The value or null if not found
*/
V get(ByteBuffer b, int offset, int len);
/**
* Get the best match from key in a String.
*
* @param s The string
* @return The value or null if not found
*/
V getBest(String s);
/**
* Get the best match from key in a String.
*
* @param s The string
* @param offset The offset within the string of the key
* @param len the length of the key
* @return The value or null if not found
*/
V getBest(String s, int offset, int len);
/**
* Get the best match from key in a byte array.
* The key is assumed to by ISO_8859_1 characters.
*
* @param b The buffer
* @param offset The offset within the array of the key
* @param len the length of the key
* @return The value or null if not found
*/
V getBest(byte[] b, int offset, int len);
/**
* Get the best match from key in a byte buffer.
* The key is assumed to by ISO_8859_1 characters.
*
* @param b The buffer
* @param offset The offset within the buffer of the key
* @param len the length of the key
* @return The value or null if not found
*/
V getBest(ByteBuffer b, int offset, int len);
Set keySet();
boolean isFull();
boolean isCaseInsensitive();
void clear();
}