Package org.apache.calcite.sql.validate

Interface SqlNameMatcher

All Known Implementing Classes:

SqlNameMatchers.BaseMatcher, SqlNameMatchers.LiberalNameMatcher

public interface SqlNameMatcher

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

See Also:

SqlNameMatchers

Method Summary

Modifier and Type	Method	Description
java.lang.String	bestString()	Returns the most recent match.
java.util.Set<java.lang.String>	createSet()	Creates a set that has the same case-sensitivity as this matcher.
RelDataTypeField	field(RelDataType rowType, java.lang.String fieldName)	Finds a field with a given name, using the current case-sensitivity, returning null if not found.
int	frequency(java.lang.Iterable<java.lang.String> names, java.lang.String name)	Returns how many times a string occurs in a collection.
<K extends java.util.List<java.lang.String>,V> V	get(java.util.Map<K,V> map, java.util.List<java.lang.String> prefixNames, java.util.List<java.lang.String> names)	Looks up an item in a map.
boolean	isCaseSensitive()	Returns whether name matching is case-sensitive.
boolean	matches(java.lang.String string, java.lang.String name)	Returns a name matches another.

Method Detail

isCaseSensitive

boolean isCaseSensitive()

Returns whether name matching is case-sensitive.

matches

boolean matches(java.lang.String string,
                java.lang.String name)

Returns 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 java.util.List<java.lang.String>,V> V get(java.util.Map<K,V> map,
                                                           java.util.List<java.lang.String> prefixNames,
                                                           java.util.List<java.lang.String> names)

Looks up an item in a map.

bestString

java.lang.String bestString()

Returns the most recent match.

In the default implementation, throws UnsupportedOperationException.

field

RelDataTypeField field(RelDataType rowType,
                       java.lang.String fieldName)

Finds a field with a given name, using the current case-sensitivity, returning null if not found.

Parameters:

rowType - Row type

fieldName - Field name

Returns:

Field, or null if not found

frequency

int frequency(java.lang.Iterable<java.lang.String> names,
              java.lang.String name)

Returns how many times a string occurs in a collection.

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

createSet

java.util.Set<java.lang.String> createSet()

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