Bug fix

import org.apache.openjpa.jdbc.conf.JDBCConfiguration;
import org.apache.openjpa.persistence.AnnotationPersistenceMetaDataSerializer;
import org.apache.openjpa.persistence.jdbc.AnnotationPersistenceMappingSerializer;
import org.apache.openjpa.persistence.jdbc.PersistenceMappingFactory;

public class CustomAnnotationSerializerPersistenceMappingFactory extends PersistenceMappingFactory {
    @Override
    protected AnnotationPersistenceMetaDataSerializer newAnnotationSerializer() {
        AnnotationPersistenceMappingSerializer ser = new CustomEscapedAnnotationPersistenceMappingSerializer((JDBCConfiguration) repos.getConfiguration());
        ser.setSyncMappingInfo(true);
        return ser;
    }

}

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import java.lang.annotation.Annotation;

import org.apache.openjpa.jdbc.conf.JDBCConfiguration;
import org.apache.openjpa.persistence.AnnotationBuilder;
import org.apache.openjpa.persistence.jdbc.AnnotationPersistenceMappingSerializer;

public class CustomEscapedAnnotationPersistenceMappingSerializer extends AnnotationPersistenceMappingSerializer {

    public CustomEscapedAnnotationPersistenceMappingSerializer(JDBCConfiguration conf) {
        super(conf);
    }

    @Override
    protected AnnotationBuilder newAnnotationBuilder(Class<? extends Annotation> annType) {
        return new EscapedAnnotationBuilder(annType);
    }

}

======================================================================================
import java.lang.annotation.Annotation;

import org.apache.commons.lang3.StringEscapeUtils;
import org.apache.openjpa.persistence.AnnotationBuilder;

public class EscapedAnnotationBuilder extends AnnotationBuilder {

    protected EscapedAnnotationBuilder(Class<? extends Annotation> type) {
        super(type);
    }

    @Override
    public AnnotationBuilder add(String key, String val) {
        return super.add(key, StringEscapeUtils.escapeJava(val));
    }

}