org.apache.gravitino.utils

Class MapUtils

java.lang.Object

org.apache.gravitino.utils.MapUtils

public class MapUtils
extends java.lang.Object

Utility class for working with maps.

Method Summary

Modifier and Type	Method and Description
static java.util.Map<java.lang.String,java.lang.String>	getFilteredMap(java.util.Map<java.lang.String,java.lang.String> m, java.util.function.Predicate predicate) Returns a map with all keys that match the predicate.
static java.util.Map<java.lang.String,java.lang.String>	getPrefixMap(java.util.Map<java.lang.String,java.lang.String> m, java.lang.String prefix) Returns a map with all keys that start with the given prefix.
static java.util.Map<java.lang.String,java.lang.String>	unmodifiableMap(java.util.Map<java.lang.String,java.lang.String> m) Returns an unmodifiable map.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getPrefixMap

public static java.util.Map<java.lang.String,java.lang.String> getPrefixMap(java.util.Map<java.lang.String,java.lang.String> m,
                                                                            java.lang.String prefix)

Returns a map with all keys that start with the given prefix.

Parameters:

m - The map to filter.

prefix - The prefix to filter by.

Returns:

A map with all keys that start with the given prefix.

getFilteredMap

public static java.util.Map<java.lang.String,java.lang.String> getFilteredMap(java.util.Map<java.lang.String,java.lang.String> m,
                                                                              java.util.function.Predicate predicate)

Returns a map with all keys that match the predicate.

Parameters:

m - The map to filter.

predicate - The predicate expression to filter the keys.

Returns:

A map with all keys that match the predicate.

unmodifiableMap

public static java.util.Map<java.lang.String,java.lang.String> unmodifiableMap(java.util.Map<java.lang.String,java.lang.String> m)

Returns an unmodifiable map.

Parameters:

m - The map to make unmodifiable.

Returns:

An unmodifiable map.