PropertyPath


public class PropertyPath implements Iterable


Represents a property path returned from searching the AppSearch Database.

One of the use cases for this class is when searching the AppSearch Database for the snippet matching use case. In this case you will get back SearchResult.MatchInfo objects that contain a property path signifying the location of a match within the database. This is a string that may look something like "foo.bar[0]". PropertyPath parses this string and breaks it up into a List of PathSegments. These may represent either a property or a property and a 0-based index into the property. For instance, "foo.bar[1]" would be parsed into a PathSegment with a property name of foo and a PathSegment with a property name of bar and an index of 1. This allows for easier manipulation of the property path.

This class won't perform any retrievals, it will only parse the path string. As such, it may not necessarily refer to a valid path in the database.

Summary

Nested types

A segment of a PropertyPath, which includes the name of the property and a 0-based index into this property.

Public constructors

Constructor directly accepting a path list

Constructor that parses a string representing the path to populate a List of PathSegments

Public methods

boolean
@NonNull PropertyPath.PathSegment
get(int index)

Returns the PathSegment at a specified index of the PropertyPath.

int
@NonNull Iterator<PropertyPath.PathSegment>

Returns an iterator over the PathSegments within the PropertyPath

int

Returns the number of PathSegments in the PropertyPath.

@NonNull String

Returns a valid path string representing this PropertyPath

Inherited methods

From java.lang.Iterable
void
forEach(Consumer<T> action)
Spliterator<T>

Public constructors

PropertyPath

Added in 1.1.0-alpha07
public PropertyPath(@NonNull List<PropertyPath.PathSegment> pathList)

Constructor directly accepting a path list

Parameters
@NonNull List<PropertyPath.PathSegment> pathList

a list of PathSegments

PropertyPath

Added in 1.1.0-alpha07
public PropertyPath(@NonNull String path)

Constructor that parses a string representing the path to populate a List of PathSegments

Parameters
@NonNull String path

the string to be validated and parsed into PathSegments

Throws
java.lang.IllegalArgumentException

when the path is invalid or malformed

Public methods

equals

public boolean equals(@Nullable Object o)

get

Added in 1.1.0-alpha07
public @NonNull PropertyPath.PathSegment get(int index)

Returns the PathSegment at a specified index of the PropertyPath.

Calling get(1) on a PropertyPath representing "foo.bar[1]" will return a PathSegment representing "bar[1]". PathSegments both with and without a property index of NON_REPEATED_CARDINALITY are retrieved the same.

Parameters
int index

the position into the PropertyPath

Throws
java.lang.ArrayIndexOutOfBoundsException

if index is not a valid index in the path list

hashCode

public int hashCode()

iterator

Added in 1.1.0-alpha07
public @NonNull Iterator<PropertyPath.PathSegmentiterator()

Returns an iterator over the PathSegments within the PropertyPath

size

Added in 1.1.0-alpha07
public int size()

Returns the number of PathSegments in the PropertyPath.

Paths representing "foo.bar" and "foo[1].bar[1]" will have the same size, as a property and an index into that property are stored in one PathSegment.

toString

public @NonNull String toString()

Returns a valid path string representing this PropertyPath