Class MoreValues

java.lang.Object

com.google.mu.protobuf.util.MoreValues

@CheckReturnValue
public final class MoreValues
extends Object

Additional utilities to help create Value and ListValue messages.

Since:

5.8

Field Summary

Fields

Modifier and Type	Field	Description
static final com.google.protobuf.Value	FALSE	The Value for boolean false.
static final com.google.protobuf.Value	NULL	The Value for null.
static final com.google.protobuf.Value	TRUE	The Value for boolean true.

Method Summary

Modifier and Type	Method	Description
static List<Object>	asList(com.google.protobuf.ListValueOrBuilder listValue)	Returns a List<Object> view over listValue.
static @Nullable Object	fromValue(com.google.protobuf.ValueOrBuilder value)	Unwraps value.
static com.google.protobuf.ListValue	listValueOf(double... values)	Returns ListValue wrapping values.
static com.google.protobuf.ListValue	listValueOf(@Nullable com.google.protobuf.Struct... values)	Returns ListValue wrapping values.
static com.google.protobuf.ListValue	listValueOf(@Nullable String... values)	Returns ListValue wrapping values.
static com.google.protobuf.Value	nullableValueOf(@Nullable String string)	Returns Value wrapper for string if not null, or else returns NULL.
static Collector<com.google.protobuf.Value, ?, com.google.protobuf.ListValue>	toListValue()	Returns a Collector that collects the input values into ListValue.

Methods inherited from class java.lang.Object

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

Field Details

NULL

public static final com.google.protobuf.Value NULL

The Value for null.

TRUE

public static final com.google.protobuf.Value TRUE

The Value for boolean true.

FALSE

public static final com.google.protobuf.Value FALSE

The Value for boolean false.

Method Details

nullableValueOf

public static com.google.protobuf.Value nullableValueOf(@Nullable String string)

Returns Value wrapper for string if not null, or else returns NULL.

listValueOf

public static com.google.protobuf.ListValue listValueOf(double... values)

Returns ListValue wrapping values.

listValueOf

public static com.google.protobuf.ListValue listValueOf(@Nullable String... values)

Returns ListValue wrapping values. Null strings are converted to NULL.

listValueOf

public static com.google.protobuf.ListValue listValueOf(@Nullable com.google.protobuf.Struct... values)

Returns ListValue wrapping values. Null structs are converted to NULL.

toListValue

public static Collector<com.google.protobuf.Value, ?, com.google.protobuf.ListValue> toListValue()

Returns a Collector that collects the input values into ListValue.

fromValue

public static @Nullable Object fromValue(com.google.protobuf.ValueOrBuilder value)

Unwraps value.

For example, Values.of(1) is unwrapped to 1; ListValue is unwrapped as List<Object>; Struct is unwrapped as Map<String, Object>; and NullValue is unwrapped as null, etc.

Note that integral numbers in the range of int will be unwrapped as Integer; while integral numbers otherwise in the range of long will be unwrapped as Long. All other numbers are unwrapped as Double. If you need to handle all number cases unconditionally, consider to use Number.doubleValue().

The returned object is immutable. Even if value is an instance of Value.Builder, and the underlying state is changed after this method returns, the returned object remains unchanged.

Since:

5.9

See Also:

• MoreStructs.asMap(com.google.protobuf.Struct)
• asList(com.google.protobuf.ListValueOrBuilder)

asList

public static List<Object> asList(com.google.protobuf.ListValueOrBuilder listValue)

Returns a List<Object> view over listValue.

For example, Values.of(1) is unwrapped to 1L; Struct is unwrapped as Map<String, Object>; and NullValue is unwrapped as null, etc.

Since:

5.9

See Also:

• MoreStructs.asMap(com.google.protobuf.Struct)
• fromValue(com.google.protobuf.ValueOrBuilder)