gudusoft.gsqlparser.ext.sqlnamematcher

Interface SqlNameMatcher

public interface SqlNameMatcher

Checks whether two names are the same according to a case-sensitivity policy.

Originally derived from Apache Calcite's name matching framework.

See Also:

SqlNameMatchers

Method Summary

Modifier and Type	Method and Description
String	bestString() Returns the most recent match.
Set<String>	createSet() Creates a set that has the same case-sensitivity as this matcher.
default List<String>	distinctCopy(Iterable<String> names) Returns a copy of a collection, removing duplicates and retaining iteration order.
int	frequency(Iterable<String> names, String name) Returns how many times a string occurs in a collection.
<K extends List<String>,V> V	get(Map<K,V> map, List<String> prefixNames, List<String> names) Looks up an item in a map.
default int	indexOf(Iterable<String> names, String name) Returns the index of the first element of a collection that matches.
boolean	isCaseSensitive() Returns whether name matching is case-sensitive.
boolean	matches(String string, String name) Returns whether a name matches another.

Method Detail

isCaseSensitive

boolean isCaseSensitive()

Returns whether name matching is case-sensitive.

matches

boolean matches(String string,
                String name)

Returns whether a name matches another.

Parameters:

string - Name written in code

name - Name of object we are trying to match

Returns:

Whether matches

get

<K extends List<String>,V> V get(Map<K,V> map,
                                 List<String> prefixNames,
                                 List<String> names)

Looks up an item in a map.

Parameters:

map - Map to search

prefixNames - Prefix names to prepend

names - Names to search for

Returns:

Value if found, null otherwise

bestString

String bestString()

Returns the most recent match.

In the default implementation, throws UnsupportedOperationException.

frequency

int frequency(Iterable<String> names,
              String name)

Returns how many times a string occurs in a collection.

Similar to Collections.frequency(java.util.Collection<?>, java.lang.Object).

distinctCopy

default List<String> distinctCopy(Iterable<String> names)

Returns a copy of a collection, removing duplicates and retaining iteration order.

indexOf

default int indexOf(Iterable<String> names,
                    String name)

Returns the index of the first element of a collection that matches.

createSet

Set<String> createSet()

Creates a set that has the same case-sensitivity as this matcher.