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andreak avatar andreak commented on June 25, 2024

It seems it's EclipseLink not free()-ing the Array after creation.
According to https://docs.oracle.com/javase/tutorial/jdbc/basics/array.html the Array returned should be freed after use.
The offending code is in EL's AbstractCompositeDirectCollectionMapping.writeFromObjectIntoRow where the result-value of this.getDescriptor().buildFieldValueFromDirectValues is never freed:

@Override
public void writeFromObjectIntoRow(Object object, AbstractRecord row, AbstractSession session, WriteType writeType) {
    if (this.isReadOnly()) {
        return;
    }

    Object attributeValue = this.getAttributeValueFromObject(object);
    if (attributeValue == null) {
        row.put(this.getField(), null);
        return;
    }

    ContainerPolicy cp = this.getContainerPolicy();

    Vector elements = new Vector(cp.sizeFor(attributeValue));
    for (Object iter = cp.iteratorFor(attributeValue); cp.hasNext(iter);) {
        Object element = cp.next(iter, session);
        if (this.getValueConverter() != null) {
            element = getValueConverter().convertObjectValueToDataValue(element, session);
        }
        if (element != null) {
            elements.addElement(element);
        }
    }

    Object fieldValue = null;
    if (!elements.isEmpty()) {
        fieldValue = this.getDescriptor().buildFieldValueFromDirectValues(elements, elementDataTypeName, session);
    }
    row.put(this.getField(), fieldValue);
    // fieldValue should be free() here.

from pgjdbc-ng.

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