Index: trunk/ippdb/src/ippdb.c
===================================================================
--- trunk/ippdb/src/ippdb.c	(revision 17142)
+++ trunk/ippdb/src/ippdb.c	(revision 17144)
@@ -50,4 +50,5 @@
 #define WARPSKYCELLMAP_TABLE_NAME "warpSkyCellMap"
 #define WARPSKYFILE_TABLE_NAME "warpSkyfile"
+#define WARPMASK_TABLE_NAME "warpMask"
 #define DIFFRUN_TABLE_NAME "diffRun"
 #define DIFFINPUTSKYFILE_TABLE_NAME "diffInputSkyfile"
@@ -10922,4 +10923,284 @@
     return true;
 }
+static void warpMaskRowFree(warpMaskRow *object);
+
+warpMaskRow *warpMaskRowAlloc(const char *label)
+{
+    warpMaskRow     *_object;
+
+    _object = psAlloc(sizeof(warpMaskRow));
+    psMemSetDeallocator(_object, (psFreeFunc)warpMaskRowFree);
+
+    _object->label = psStringCopy(label);
+
+    return _object;
+}
+
+static void warpMaskRowFree(warpMaskRow *object)
+{
+    psFree(object->label);
+}
+
+bool warpMaskCreateTable(psDB *dbh)
+{
+    psMetadata *md = psMetadataAlloc();
+    if (!psMetadataAdd(md, PS_LIST_TAIL, "label", PS_DATA_STRING, "Primary Key", "64")) {
+        psError(PS_ERR_UNKNOWN, false, "failed to add item label");
+        psFree(md);
+        return false;
+    }
+
+    bool status = psDBCreateTable(dbh, WARPMASK_TABLE_NAME, md);
+
+    psFree(md);
+
+    return status;
+}
+
+bool warpMaskDropTable(psDB *dbh)
+{
+    return psDBDropTable(dbh, WARPMASK_TABLE_NAME);
+}
+
+bool warpMaskInsert(psDB * dbh, const char *label)
+{
+    psMetadata *md = psMetadataAlloc();
+    if (!psMetadataAdd(md, PS_LIST_TAIL, "label", PS_DATA_STRING, NULL, label)) {
+        psError(PS_ERR_UNKNOWN, false, "failed to add item label");
+        psFree(md);
+        return false;
+    }
+
+    bool status = psDBInsertOneRow(dbh, WARPMASK_TABLE_NAME, md);
+    psFree(md);
+
+    return status;
+}
+
+long long warpMaskDelete(psDB *dbh, const psMetadata *where, unsigned long long limit)
+{
+    long long       deleted = 0;
+
+    long long count = psDBDeleteRows(dbh, WARPMASK_TABLE_NAME, where, limit);
+    if (count < 0) {
+        psError(PS_ERR_UNKNOWN, true, "failed to delete row from warpMask");
+        return count;
+
+        deleted += count;
+    }
+
+    return deleted;
+}
+bool warpMaskInsertObject(psDB *dbh, warpMaskRow *object)
+{
+    return warpMaskInsert(dbh, object->label);
+}
+
+bool warpMaskInsertObjects(psDB *dbh, psArray *objects)
+{
+    for (long i = 0; i < psArrayLength(objects); i++) {
+        if (!warpMaskInsertObject(dbh, objects->data[i])) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+bool warpMaskInsertFits(psDB *dbh, const psFits *fits)
+{
+    psArray         *rowSet;
+
+    // move to (the first?) extension named  WARPMASK_TABLE_NAME
+    if (!psFitsMoveExtName(fits, WARPMASK_TABLE_NAME)) {
+        psError(PS_ERR_UNKNOWN, true, "failed to find FITS extension %s", WARPMASK_TABLE_NAME);
+        return false;
+    }
+
+    // check HDU type
+    if (psFitsGetExtType(fits) != PS_FITS_TYPE_BINARY_TABLE)  {
+        psError(PS_ERR_UNKNOWN, true, "FITS HDU type is not PS_FITS_TYPE_BINARY_TABLE");
+        return false;
+    }
+
+    // read fits table
+    rowSet = psFitsReadTable(fits);
+    if (!rowSet) {
+        psError(PS_ERR_UNKNOWN, true, "FITS read error or FITS table is empty");
+        psFree(rowSet);
+        return false;
+    }
+
+    if (!psDBInsertRows(dbh, WARPMASK_TABLE_NAME, rowSet)) {
+        psError(PS_ERR_UNKNOWN, false, "databse insert failed");
+        psFree(rowSet);
+        return false;
+    }
+
+    psFree(rowSet);
+
+    return true;
+}
+
+bool warpMaskSelectRowsFits(psDB *dbh, psFits *fits, const psMetadata *where, unsigned long long limit)
+{
+    psArray         *rowSet;
+
+    rowSet = psDBSelectRows(dbh, WARPMASK_TABLE_NAME, where, limit);
+    if (!rowSet) {
+        return false;
+    }
+
+    // output to fits
+    if (!psFitsWriteTable(fits, NULL, rowSet, WARPMASK_TABLE_NAME)) {
+        psError(PS_ERR_UNKNOWN, false, "FITS table write failed");
+        psFree(rowSet);
+        return false;
+    }
+
+    psFree(rowSet);
+
+    return true;
+}
+
+psMetadata *warpMaskMetadataFromObject(const warpMaskRow *object)
+{
+    psMetadata *md = psMetadataAlloc();
+    if (!psMetadataAdd(md, PS_LIST_TAIL, "label", PS_DATA_STRING, NULL, object->label)) {
+        psError(PS_ERR_UNKNOWN, false, "failed to add item label");
+        psFree(md);
+        return false;
+    }
+
+
+    return md;
+}
+
+warpMaskRow *warpMaskObjectFromMetadata(psMetadata *md)
+{
+
+bool status = false;
+    char* label = psMetadataLookupPtr(&status, md, "label");
+    if (!status) {
+        psError(PS_ERR_UNKNOWN, true, "failed to lookup value for item label");
+        return false;
+    }
+
+    return warpMaskRowAlloc(label);
+}
+psArray *warpMaskSelectRowObjects(psDB *dbh, const psMetadata *where, unsigned long long limit)
+{
+    psArray         *rowSet;
+    psArray         *returnSet;
+    psU64           i;
+
+    rowSet = psDBSelectRows(dbh, WARPMASK_TABLE_NAME, where, limit);
+    if (!rowSet) {
+        return NULL;
+    }
+
+    // convert psMetadata rows to row objects
+
+    returnSet = psArrayAllocEmpty(rowSet->n);
+
+    for (i = 0; i < rowSet->n; i++) {
+        warpMaskRow *object = warpMaskObjectFromMetadata(rowSet->data[i]);
+        if (!object) {
+            psFree(object);
+            psFree(returnSet);
+            psError(PS_ERR_UNKNOWN, false, "database error");
+            return NULL;
+        }
+        psArrayAdd(returnSet, 0, object);
+        psFree(object);
+    }
+
+    psFree(rowSet);
+
+    return returnSet;
+}
+bool warpMaskDeleteObject(psDB *dbh, const warpMaskRow *object)
+{
+    psMetadata *where = warpMaskMetadataFromObject(object);
+    long long count = psDBDeleteRows(dbh, WARPMASK_TABLE_NAME, where, 0);
+    psFree(where);
+    if (count < 0) {
+        psError(PS_ERR_UNKNOWN, true, "failed to delete row from warpMask");
+        return false;
+    }
+    if (count > 1) {
+        // XXX should this be a psAbort() instead?  It is possible that
+        // having an object match multiple rows was by design.
+        psError(PS_ERR_UNKNOWN, true, "warpMaskRow object matched more then one row.  Check your database schema");
+        return false;
+    }
+
+    return true;
+}
+long long warpMaskDeleteRowObjects(psDB *dbh, const psArray *objects, unsigned long long limit)
+{
+    long long       deleted = 0;
+
+    for (long long i = 0; i < objects->n; i++) {
+        warpMaskRow *object = objects->data[i];
+        psMetadata *where = warpMaskMetadataFromObject(object);
+        long long count = psDBDeleteRows(dbh, WARPMASK_TABLE_NAME, where, limit);
+        psFree(where);
+        if (count < 0) {
+            psError(PS_ERR_UNKNOWN, true, "failed to delete row from warpMask");
+            return count;
+        }
+
+        deleted += count;
+    }
+
+    return deleted;
+}
+bool warpMaskPrintObjects(FILE *stream, psArray *objects, bool mdcf)
+{
+    PS_ASSERT_PTR_NON_NULL(objects, false);
+
+    psMetadata *output = psMetadataAlloc();
+    for (long i = 0; i < psArrayLength(objects); i++) {
+        psMetadata *md = warpMaskMetadataFromObject(objects->data[i]);
+        if (!psMetadataAddMetadata(
+            output,
+            PS_LIST_TAIL,
+            WARPMASK_TABLE_NAME,
+            PS_META_DUPLICATE_OK,
+            NULL,
+            md
+        )) {
+            psError(PS_ERR_UNKNOWN, false, "failed to add metadata");
+            psFree(md);
+            psFree(output);
+            return false;
+        }
+        psFree(md);
+    }
+
+    if (!ippdbPrintMetadataRaw(stream, output, mdcf)) {
+        psError(PS_ERR_UNKNOWN, false, "failed to print metadata");
+        psFree(output);
+    }
+    psFree(output);
+
+    return true;
+}
+bool warpMaskPrintObject(FILE *stream, warpMaskRow *object, bool mdcf)
+{
+    PS_ASSERT_PTR_NON_NULL(object, false);
+
+    psMetadata *md = warpMaskMetadataFromObject(object);
+
+    if (!ippdbPrintMetadataRaw(stream, md, mdcf)) {
+        psError(PS_ERR_UNKNOWN, false, "failed to print metadata");
+        psFree(md);
+    }
+
+    psFree(md);
+
+    return true;
+}
 static void diffRunRowFree(diffRunRow *object);
 
Index: trunk/ippdb/src/ippdb.h
===================================================================
--- trunk/ippdb/src/ippdb.h	(revision 17142)
+++ trunk/ippdb/src/ippdb.h	(revision 17144)
@@ -4580,4 +4580,199 @@
     bool            mdcf                ///< format as mdconfig or simple
 );
+/** warpMaskRow data structure
+ *
+ * Structure for representing a single row of warpMask table data.
+ */
+
+typedef struct {
+    char            *label;
+} warpMaskRow;
+
+/** Creates a new warpMaskRow object
+ *
+ *  @return A new warpMaskRow object or NULL on failure.
+ */
+
+warpMaskRow *warpMaskRowAlloc(
+    const char      *label
+);
+
+/** Creates a new warpMask table
+ *
+ * @return true on success
+ */
+
+bool warpMaskCreateTable(
+    psDB            *dbh                ///< Database handle
+);
+
+/** Deletes a warpMask table
+ *
+ * @return true on success
+ */
+
+bool warpMaskDropTable(
+    psDB            *dbh                ///< Database handle
+);
+
+/** Insert a single row into a table
+ *
+ * This function constructs and inserts a single row based on it's parameters.
+ *
+ * @return true on success
+ */
+
+bool warpMaskInsert(
+    psDB            *dbh,               ///< Database handle
+    const char      *label
+);
+
+/** Deletes up to limit rows from the database and returns the number of rows actually deleted. 
+ *
+ * @return A The number of rows removed or a negative value on error
+ */
+
+long long warpMaskDelete(
+    psDB            *dbh,               ///< Database handle
+    const psMetadata *where,            ///< Row match criteria
+    unsigned long long limit            ///< Maximum number of elements to delete 
+);
+
+/** Insert a single warpMaskRow object into a table
+ *
+ * This function constructs and inserts a single row based on it's parameters.
+ *
+ * @return true on success
+ */
+
+bool warpMaskInsertObject(
+    psDB            *dbh,               ///< Database handle
+    warpMaskRow     *object             ///< warpMaskRow object
+);
+
+/** Insert an array of warpMaskRow object into a table
+ *
+ * This function constructs and inserts multiple rows based on it's parameters.
+ *
+ * @return true on success
+ */
+
+bool warpMaskInsertObjects(
+    psDB            *dbh,               ///< Database handle
+    psArray         *objects            ///< array of warpMaskRow objects
+);
+
+/** Insert data from a binary FITS table warpMaskRow into the database
+ *
+ * This function expects a psFits object with a FITS table as the first
+ * extension.  The table must have at least one row of data in it, that is of
+ * the appropriate format (number of columns and their type).  All other
+ * extensions are ignored.
+ *
+ * @return true on success
+ */
+
+bool warpMaskInsertFits(
+    psDB            *dbh,               ///< Database handle
+    const psFits    *fits               ///< psFits object
+);
+
+/** Selects up to limit from the database and returns them in a binary FITS table
+ *
+ * This function assumes an empty psFits object and will create a FITS table
+ * as the first extension.
+ *
+ *  See psDBSelectRows() for documentation on the format of where.
+ *
+ * @return true on success
+ */
+
+bool warpMaskSelectRowsFits(
+    psDB            *dbh,               ///< Database handle
+    psFits          *fits,              ///< psFits object
+    const psMetadata *where,            ///< Row match criteria
+    unsigned long long limit            ///< Maximum number of elements to return
+);
+
+/** Convert a warpMaskRow into an equivalent psMetadata
+ *
+ * @return A psMetadata pointer or NULL on error
+ */
+
+psMetadata *warpMaskMetadataFromObject(
+    const warpMaskRow *object             ///< fooRow to convert into a psMetadata
+);
+
+/** Convert a psMetadata into an equivalent fooRow
+ *
+ * @return A warpMaskRow pointer or NULL on error
+ */
+
+warpMaskRow *warpMaskObjectFromMetadata(
+    psMetadata      *md                 ///< psMetadata to convert into a fooRow
+);
+/** Selects up to limit rows from the database and returns as warpMaskRow objects in a psArray
+ *
+ *  See psDBSelectRows() for documentation on the format of where.
+ *
+ * @return A psArray pointer or NULL on error
+ */
+
+psArray *warpMaskSelectRowObjects(
+    psDB            *dbh,               ///< Database handle
+    const psMetadata *where,            ///< Row match criteria
+    unsigned long long limit            ///< Maximum number of elements to return
+);
+/** Deletes a row from the database coresponding to an warpMask
+ *
+ *  Note that a 'where' search psMetadata is constructed from each object and
+ *  used to find rows to delete.
+ *
+ * @return A The number of rows removed or a negative value on error
+ */
+
+bool warpMaskDeleteObject(
+    psDB            *dbh,               ///< Database handle
+    const warpMaskRow *object    ///< Object to delete
+);
+/** Deletes up to limit rows from the database and returns the number of rows actually deleted. 
+ *
+ *  Note that a 'where' search psMetadata is constructed from each object and
+ *  used to find rows to delete.
+ *
+ * @return A The number of rows removed or a negative value on error
+ */
+
+long long warpMaskDeleteRowObjects(
+    psDB            *dbh,               ///< Database handle
+    const psArray   *objects,           ///< Array of objects to delete
+    unsigned long long limit            ///< Maximum number of elements to delete 
+);
+/** Formats and prints an array of warpMaskRow objects
+ *
+ * When mdcf is set the formated output is in psMetadataConfig
+ * format, otherwise it is in a simple tabular format.
+ *
+ * @return true on success
+ */
+
+bool warpMaskPrintObjects(
+    FILE            *stream,            ///< a stream
+    psArray         *objects,           ///< An array of warpMaskRow objects
+    bool            mdcf                ///< format as mdconfig or simple
+);
+/** Formats and prints an warpMaskRow object
+ *
+ * When mdcf is set the formated output is in psMetadataConfig
+ * format, otherwise it is in a simple tabular format.
+ *
+ * @return true on success
+ */
+
+bool warpMaskPrintObject(
+    FILE            *stream,            ///< a stream
+    warpMaskRow *object,    ///< an warpMaskRow object
+    bool            mdcf                ///< format as mdconfig or simple
+);
 /** diffRunRow data structure
  *