public static final String SCHEMA_GEN_CREATE_SOURCE = "javax.persistence.schema-generation.create-source ";
public static final String SCHEMA_GEN_DROP_SOURCE = "javax.persistence.schema-generation.drop-source ";
public static final String SCHEMA_GEN_CREATE_SCRIPT_SOURCE = "javax.persistence.schema-generation.create-script-source ";
public static final String SCHEMA_GEN_DROP_SCRIPT_SOURCE = "javax.persistence.schema-generation.drop-script-source ";