hibernate/hibernate-orm · error · IllegalArgumentException

Null property name

Error message

Null property name

What it means

Error "Null property name" thrown in hibernate/hibernate-orm.

Source

Thrown at hibernate-core/src/main/java/org/hibernate/internal/AbstractSharedSessionContract.java:440

		// returned map should be a mutable copy,
		// not an unmodifiable map. There's no
		// good reason to cache the initial
		// properties, since we have to copy them
		// each time this method is called.
		return properties == null
				? getInitialProperties()
				: new HashMap<>( properties );
	}

	@Nonnull
	protected abstract Map<String, Object> getInitialProperties();

	@Override
	public void setProperty(@Nonnull String propertyName, @Nullable Object value) {
		checkOpen();
		//noinspection ConstantValue
		if ( propertyName == null ) {
			throw new IllegalArgumentException( "Null property name" );
		}
		else if ( value != null && !(value instanceof Serializable) ) {
			SESSION_LOGGER.nonSerializableProperty( propertyName );
		}
		else {
			// the first time we explicitly set a
			// property, it's worth caching the
			// initial properties
			final Map<String, Object> properties;
			if ( this.properties == null ) {
				properties = getInitialProperties();
				this.properties = properties;
			}
			else {
				properties = this.properties;
			}
			if ( value == null ) {
				properties.remove( propertyName );

View on GitHub (pinned to fad1729dce)

Solutions

1. Pass a non-null property name to the session operation.

When it happens

Trigger: Thrown when a null property name is passed to an API requiring one.

Common situations: Typical situations: passing a null or uninitialized property name string to a session/query method.

AI-assisted analysis of hibernate/hibernate-orm@fad1729dce (2026-08-22). Data as JSON: /api/errors/fa75ad6c5fa0187c. Report an issue: GitHub.