INNER CODE UNIT · Java

contains

objectbox/objectbox-java · objectbox-java/src/main/java/io/objectbox/Box.java:340

    public boolean contains(long id) {
        Cursor<T> reader = getReader();
        try {
            return reader.seek(id);
        } finally {
            releaseReader(reader);
        }
    }

    /**
     * Puts the given object and returns its (new) ID.
     * <p>
     * This means that if its {@link Id @Id} property is 0 or null, it is inserted as a new object and assigned the next
     * available ID. For example, if there is an object with ID 1 and another with ID 100, it will be assigned ID 101.
     * The new ID is also set on the given object before this returns.
     * <p>
     * If instead the object has an assigned ID set, if an object with the same ID exists it is updated. Otherwise, it
     * is inserted with that ID.

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