Contains

Description

This operation checks if specific values exist in a set.

Method

// Check a Single Value
Backendless.Hive(hiveName).SetStore(keyName).isValueMember(value);

// Check Multiple Values
Backendless.Hive(hiveName).SetStore(keyName).isValueMember(values);

where:

Argument	Description
hiveName	Name of a hive where the operation is performed. String value.
keyName	Key name identifying a set. String value.
value	Value to check if it exists in the set.
values	An array of values to check if they exist in the set.

Return Value

An array containing boolean values. For every specified item, a boolean value is returned indicating if it is present in the set or not. If an item exists, then true is returned in the array, false otherwise.

Example

Check One Value

The example below verifies if the "Sedan" value exists in the "cars" set.

Backendless.Hive("transport").SetStore("cars").isValueMember("Sedan");

where:

Argument	Description
"transport"	Name of a hive where the operation is performed.
"cars"	Key name identifying a set.

Check Multiple Values

The example below verifies if the "Sedan" and "Crossover" values exist in the "cars" set.

Set<String> values = new HashSet<>();
keyNames.add( "Sedan" );
keyNames.add( "Crossover" );

Backendless.Hive("transport").SetStore("cars").isValueMember(values);

where:

Argument	Description
"transport"	Name of a hive where the operation is performed.
"cars"	Key name identifying a set.

Codeless Reference

where:

Argument	Description
hive name	Name of a hive where the operation is performed.
key name	Key name identifying a set.
items	A list of values to check if they exist.

Returns a list containing boolean value(s). For every specified item, a boolean value is returned indicating if it is present in the set or not. If an item exists, then true is returned in the array, false otherwise.

Consider the following Set storage:

The example below checks if "Sedan" and "Crossover" exist in the "cars" set:

The logic produces the following output: