X-Git-Url: http://git.indexdata.com/?p=yaz-moved-to-github.git;a=blobdiff_plain;f=retrieval%2Fd1_expout.c;h=8ced47f5389c70518e3af8cc08d2356e7e56f82a;hp=03d86a2fe675e6ba4b55ff9f09a0ae9aad2df0df;hb=5a43720eeca6175e7eba0672a9dc622c24125996;hpb=abfbb8adfc5e2cbc048b623d41eaf36f05cf8bd9

diff --git a/retrieval/d1_expout.c b/retrieval/d1_expout.c
index 03d86a2..8ced47f 100644
--- a/retrieval/d1_expout.c
+++ b/retrieval/d1_expout.c
@@ -1,10 +1,52 @@
 /*
- * Copyright (c) 1995, Index Data.
+ * Copyright (c) 1995-1998, Index Data.
  * See the file LICENSE for details.
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: d1_expout.c,v $
- * Revision 1.1  1995-12-14 11:09:51  quinn
+ * Revision 1.13  1998-06-05 08:58:48  adam
+ * Fixed un-initialised var in f_rpnCapabilities.
+ *
+ * Revision 1.12  1998/05/18 13:07:04  adam
+ * Changed the way attribute sets are handled by the retriaval module.
+ * Extended Explain conversion / schema.
+ * Modified server and client to work with ASN.1 compiled protocol handlers.
+ *
+ * Revision 1.11  1998/04/02 08:27:37  adam
+ * Minor change in definition of Z_TargetInfo. Furhter work on Explain
+ * schema - added AttributeDetails.
+ *
+ * Revision 1.10  1998/03/31 15:13:20  adam
+ * Development towards compiled ASN.1.
+ *
+ * Revision 1.9  1998/03/05 08:07:58  adam
+ * Make data1 to EXPLAIN ignore local tags in root.
+ *
+ * Revision 1.8  1998/02/11 11:53:35  adam
+ * Changed code so that it compiles as C++.
+ *
+ * Revision 1.7  1997/12/09 16:18:16  adam
+ * Work on EXPLAIN schema. First implementation of sub-schema facility
+ * in the *.abs files.
+ *
+ * Revision 1.6  1997/11/24 11:33:56  adam
+ * Using function odr_nullval() instead of global ODR_NULLVAL when
+ * appropriate.
+ *
+ * Revision 1.5  1997/11/19 10:30:06  adam
+ * More explain work.
+ *
+ * Revision 1.4  1997/11/18 09:51:08  adam
+ * Removed element num_children from data1_node. Minor changes in
+ * data1 to Explain.
+ *
+ * Revision 1.3  1997/09/17 12:10:36  adam
+ * YAZ version 1.4.
+ *
+ * Revision 1.2  1995/12/14 16:28:30  quinn
+ * More explain stuff.
+ *
+ * Revision 1.1  1995/12/14  11:09:51  quinn
  * Work on Explain
  *
  *
@@ -18,87 +60,613 @@
 #include <proto.h>
 #include <data1.h>
 
-static int *f_integer(data1_node *c, ODR o)
+typedef struct {
+    data1_handle dh;
+    ODR o;
+    int select;
+
+    bool_t *false_value;
+    bool_t *true_value;
+} ExpHandle;
+
+static int is_numeric_tag (ExpHandle *eh, data1_node *c)
+{
+    if (!c || c->which != DATA1N_tag)
+	return 0;
+    if (!c->u.tag.element)
+    {
+	logf(LOG_WARN, "Tag %s is local", c->u.tag.tag);
+	return 0;
+    }
+    if (c->u.tag.element->tag->which != DATA1T_numeric)
+    {
+	logf(LOG_WARN, "Tag %s is not numeric", c->u.tag.tag);
+	return 0;
+    }
+    if (eh->select && !c->u.tag.node_selected)
+	return 0;
+    return c->u.tag.element->tag->value.numeric;
+}
+
+static int is_data_tag (ExpHandle *eh, data1_node *c)
+{
+    if (!c || c->which != DATA1N_data)
+	return 0;
+    if (eh->select && !c->u.tag.node_selected)
+	return 0;
+    return 1;
+}
+
+static int *f_integer(ExpHandle *eh, data1_node *c)
 {
     int *r;
     char intbuf[64];
 
-    if (!c->child || c->child->which != DATA1N_data ||
-	c->child->u.data.len > 63)
+    c = c->child;
+    if (!is_data_tag (eh, c) || c->u.data.len > 63)
 	return 0;
-    r = odr_malloc(o, sizeof(*r));
-    sprintf(intbuf, "%.*s", 63, c->child->u.data.data);
+    r = (int *)odr_malloc(eh->o, sizeof(*r));
+    sprintf(intbuf, "%.*s", 63, c->u.data.data);
     *r = atoi(intbuf);
     return r;
 }
 
-static char *f_string(data1_node *c, ODR o)
+static char *f_string(ExpHandle *eh, data1_node *c)
 {
     char *r;
 
-    if (!c->child || c->child->which != DATA1N_data)
+    c = c->child;
+    if (!is_data_tag (eh, c))
 	return 0;
-    r = odr_malloc(o, c->child->u.data.len+1);
-    memcpy(r, c->child->u.data.data, c->child->u.data.len);
-    r[c->child->u.data.len] = '\0';
+    r = (char *)odr_malloc(eh->o, c->u.data.len+1);
+    memcpy(r, c->u.data.data, c->u.data.len);
+    r[c->u.data.len] = '\0';
     return r;
 }
 
-static bool_t *f_bool(data1_node *c, ODR o)
+static bool_t *f_bool(ExpHandle *eh, data1_node *c)
 {
-    return 0;
+    bool_t *tf;
+    char intbuf[64];
+
+    c = c->child;
+    if (!is_data_tag (eh, c) || c->u.data.len > 63)
+	return 0;
+    tf = (int *)odr_malloc (eh->o, sizeof(*tf));
+    sprintf(intbuf, "%.*s", c->u.data.len, c->u.data.data);
+    *tf = atoi(intbuf);
+    return tf;
 }
 
-static Z_IntUnit *f_intunit(data1_node *c, ODR o)
+static Odr_oid *f_oid(ExpHandle *eh, data1_node *c, oid_class oclass)
 {
+    char oidstr[64];
+    int oid_this[20];
+    oid_value value_for_this;
+
+    c = c->child;
+    if (!is_data_tag (eh, c) || c->u.data.len > 63)
+	return 0;
+    sprintf(oidstr, "%.*s", c->u.data.len, c->u.data.data);
+    value_for_this = oid_getvalbyname(oidstr);
+    if (value_for_this == VAL_NONE)
+    {
+	Odr_oid *oid = odr_getoidbystr(eh->o, oidstr);
+	assert (oid);
+	return oid;
+    }
+    else
+    {
+	struct oident ident;
+
+	ident.oclass = oclass;
+	ident.proto = PROTO_Z3950;
+	ident.value = value_for_this;
+	
+	oid_ent_to_oid (&ident, oid_this);
+    }
+    return odr_oiddup (eh->o, oid_this);
+}
+
+static Z_IntUnit *f_intunit(ExpHandle *eh, data1_node *c)
+{
+    /* fix */
     return 0;
 }
 
-static Z_HumanString *f_humstring(data1_node *c, ODR o)
+static Z_HumanString *f_humstring(ExpHandle *eh, data1_node *c)
 {
     Z_HumanString *r;
     Z_HumanStringUnit *u;
 
-    if (!c->child || c->child->which != DATA1N_data)
+    c = c->child;
+    if (!is_data_tag (eh, c))
 	return 0;
-    r = odr_malloc(o, sizeof(*r));
+    r = (Z_HumanString *)odr_malloc(eh->o, sizeof(*r));
     r->num_strings = 1;
-    r->strings = odr_malloc(o, sizeof(Z_HumanStringUnit*));
-    r->strings[0] = u = odr_malloc(o, sizeof(*u));
+    r->strings = (Z_HumanStringUnit **)odr_malloc(eh->o, sizeof(Z_HumanStringUnit*));
+    r->strings[0] = u = (Z_HumanStringUnit *)odr_malloc(eh->o, sizeof(*u));
     u->language = 0;
-    u->text = odr_malloc(o, c->child->u.data.len+1);
-    memcpy(u->text, c->child->u.data.data, c->child->u.data.len);
-    u->text[c->child->u.data.len] = '\0';
+    u->text = (char *)odr_malloc(eh->o, c->u.data.len+1);
+    memcpy(u->text, c->u.data.data, c->u.data.len);
+    u->text[c->u.data.len] = '\0';
     return r;
 }
 
-static Z_CommonInfo *f_commonInfo(data1_node *n, int select, ODR o)
+static Z_CommonInfo *f_commonInfo(ExpHandle *eh, data1_node *n)
 {
-    return 0;
+    Z_CommonInfo *res = (Z_CommonInfo *)odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->dateAdded = 0;
+    res->dateChanged = 0;
+    res->expiry = 0;
+    res->humanStringLanguage = 0;
+    res->otherInfo = 0;
+
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag (eh, c))
+	{
+	    case 601: res->dateAdded = f_string(eh, c); break;
+	    case 602: res->dateChanged = f_string(eh, c); break;
+	    case 603: res->expiry = f_string(eh, c); break;
+	    case 604: res->humanStringLanguage = f_string(eh, c); break;
+	}
+    }
+    return res;
 }
 
-static Z_AccessInfo *f_accessInfo(data1_node *n, int select, ODR o)
+Odr_oid **f_oid_seq (ExpHandle *eh, data1_node *n, int *num, oid_class oclass)
 {
-    return 0;
+    Odr_oid **res;
+    data1_node *c;
+    int i;
+
+    *num = 0;
+    for (c = n->child ; c; c = c->next)
+	if (is_numeric_tag (eh, c) == 1000)
+	    ++(*num);
+    if (!*num)
+	return NULL;
+    res = (int **)odr_malloc (eh->o, sizeof(*res) * (*num));
+    for (c = n->child, i = 0 ; c; c = c->next)
+	if (is_numeric_tag (eh, c) == 1000)
+	    res[i++] = f_oid (eh, c, oclass);
+    return res;
 }
+    
+char **f_string_seq (ExpHandle *eh, data1_node *n, int *num)
+{
+    char **res;
+    data1_node *c;
+    int i;
 
-static Z_ContactInfo *f_contactInfo(data1_node *n, ODR o)
+    *num = 0;
+    for (c = n->child ; c; c = c->next)
+    {
+	if (is_numeric_tag (eh, c) != 1001)
+	    continue;
+	++(*num);
+    }
+    if (!*num)
+	return NULL;
+    res = (char **)odr_malloc (eh->o, sizeof(*res) * (*num));
+    for (c = n->child, i = 0 ; c; c = c->next)
+    {
+	if (is_numeric_tag (eh, c) != 1001)
+	    continue;
+	res[i++] = f_string (eh, c);
+    }
+    return res;
+}
+
+Z_ProximitySupport *f_proximitySupport (ExpHandle *eh, data1_node *n)
 {
-    return 0;
+    Z_ProximitySupport *res = (Z_ProximitySupport *)
+	odr_malloc (eh->o, sizeof(*res));
+    res->anySupport = eh->false_value;
+    res->num_unitsSupported = 0;
+    res->unitsSupported = 0;
+    return res;
+}
+
+Z_RpnCapabilities *f_rpnCapabilities (ExpHandle *eh, data1_node *n)
+{
+    Z_RpnCapabilities *res = (Z_RpnCapabilities *)
+	odr_malloc (eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->num_operators = 0;
+    res->operators = NULL;
+    res->resultSetAsOperandSupported = eh->false_value;
+    res->restrictionOperandSupported = eh->false_value;
+    res->proximity = NULL;
+
+    for (c = n->child; n; c = c->next)
+    {
+	int i = 0;
+	switch (is_numeric_tag(eh, c))
+	{
+	case 550:
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 551)
+		    continue;
+		(res->num_operators)++;
+	    }
+	    if (res->num_operators)
+		res->operators = (int **)
+		    odr_malloc (eh->o, res->num_operators
+				* sizeof(*res->operators));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 551)
+		    continue;
+		res->operators[i++] = f_integer (eh, n);
+	    }
+	    break;
+	case 552:
+	    res->resultSetAsOperandSupported = f_bool (eh, c);
+	    break;
+	case 553:
+	    res->restrictionOperandSupported = f_bool (eh, c);
+	    break;
+	case 554:
+	    res->proximity = f_proximitySupport (eh, c);
+	    break;
+	}
+    }
+    return res;
+}
+
+Z_QueryTypeDetails *f_queryTypeDetails (ExpHandle *eh, data1_node *n)
+{
+    Z_QueryTypeDetails *res = (Z_QueryTypeDetails *)
+	odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->which = Z_QueryTypeDetails_rpn;
+    res->u.rpn = 0;
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag(eh, n))
+	{
+	case 519:
+	    res->which = Z_QueryTypeDetails_rpn;
+	    res->u.rpn = f_rpnCapabilities (eh, c);
+	    break;
+	case 520:
+	    break;
+	case 521:
+	    break;
+	}
+    }
+    return res;
+}
+
+static Z_AccessInfo *f_accessInfo(ExpHandle *eh, data1_node *n)
+{
+    Z_AccessInfo *res = (Z_AccessInfo *)odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->num_queryTypesSupported = 0;
+    res->queryTypesSupported = 0;
+    res->num_diagnosticsSets = 0;
+    res->diagnosticsSets = 0;
+    res->num_attributeSetIds = 0;
+    res->attributeSetIds = 0;
+    res->num_schemas = 0;
+    res->schemas = 0;
+    res->num_recordSyntaxes = 0;
+    res->recordSyntaxes = 0;
+    res->num_resourceChallenges = 0;
+    res->resourceChallenges = 0;
+    res->restrictedAccess = 0;
+    res->costInfo = 0;
+    res->num_variantSets = 0;
+    res->variantSets = 0;
+    res->num_elementSetNames = 0;
+    res->elementSetNames = 0;
+    res->num_unitSystems = 0;
+    res->unitSystems = 0;
+
+    for (c = n->child; c; c = c->next)
+    {
+	int i = 0;
+	switch (is_numeric_tag (eh, c))
+	{
+	case 501:
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 518)
+		    continue;
+		(res->num_queryTypesSupported)++;
+	    }
+	    if (res->num_queryTypesSupported)
+		res->queryTypesSupported =
+		    (Z_QueryTypeDetails **)
+		    odr_malloc (eh->o, res->num_queryTypesSupported
+				* sizeof(*res->queryTypesSupported));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 518)
+		    continue;
+		res->queryTypesSupported[i++] = f_queryTypeDetails (eh, n);
+	    }
+	    break;
+	case 503:
+	    res->diagnosticsSets =
+		f_oid_seq(eh, c, &res->num_diagnosticsSets, CLASS_DIAGSET);
+	    break;
+	case 505:
+	    res->attributeSetIds =
+		f_oid_seq(eh, c, &res->num_attributeSetIds, CLASS_ATTSET);
+	    break;
+	case 507:
+	    res->schemas =
+		f_oid_seq(eh, c, &res->num_schemas, CLASS_SCHEMA);
+	    break;
+	case 509:
+	    res->recordSyntaxes =
+		f_oid_seq (eh, c, &res->num_recordSyntaxes, CLASS_RECSYN);
+	    break;
+	case 511:
+	    res->resourceChallenges =
+		f_oid_seq (eh, c, &res->num_resourceChallenges, CLASS_RESFORM);
+	    break;
+	case 513: res->restrictedAccess = NULL; break; /* fix */
+	case 514: res->costInfo = NULL; break; /* fix */
+	case 515:
+	    res->variantSets =
+		f_oid_seq (eh, c, &res->num_variantSets, CLASS_VARSET);
+	    break;
+	case 516:
+	    res->elementSetNames =
+		f_string_seq (eh, c, &res->num_elementSetNames);
+	    break;
+	case 517:
+	    res->unitSystems = f_string_seq (eh, c, &res->num_unitSystems);
+	    break;
+	}
+    }
+    return res;
 }
 
-static Z_TargetInfo *f_targetInfo(data1_node *n, int select, ODR o)
+static int *f_recordCount(ExpHandle *eh, data1_node *c, int *which)
 {
-    Z_TargetInfo *res = odr_malloc(o, sizeof(*res));
+    int *r= (int *)odr_malloc(eh->o, sizeof(*r));
+    int *wp = which;
+    char intbuf[64];
+
+    c = c->child;
+    if (!is_numeric_tag (eh, c))
+	return 0;
+    if (c->u.tag.element->tag->value.numeric == 210)
+	*wp = Z_DatabaseInfo_actualNumber;
+    else if (c->u.tag.element->tag->value.numeric == 211)
+	*wp = Z_DatabaseInfo_approxNumber;
+    else
+	return 0;
+    if (!c->child || c->child->which != DATA1N_data)
+	return 0;
+    sprintf(intbuf, "%.*s", c->child->u.data.len, c->child->u.data.data);
+    *r = atoi(intbuf);
+    return r;
+}
+
+static Z_ContactInfo *f_contactInfo(ExpHandle *eh, data1_node *n)
+{
+    Z_ContactInfo *res = (Z_ContactInfo *)
+	odr_malloc (eh->o, sizeof(*res));
+    data1_node *c;
+    
+    res->name = 0;
+    res->description = 0;
+    res->address = 0;
+    res->email = 0;
+    res->phone = 0;
+    
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag (eh, c))
+	{
+	case 102: res->name = f_string (eh, c); break;
+	case 113: res->description = f_humstring (eh, c); break;
+	case 127: res->address = f_humstring (eh, c); break;
+	case 128: res->email = f_string (eh, c); break;
+	case 129: res->phone = f_string (eh, c); break;
+	}
+    }
+    return res;
+}
+
+static Z_DatabaseList *f_databaseList(ExpHandle *eh, data1_node *n)
+{
+    data1_node *c;
+    Z_DatabaseList *res;
+    int i = 0;
+    
+    for (c = n->child; c; c = c->next)
+    {
+	if (!is_numeric_tag (eh, c) != 102) 
+	    continue;
+	++i;
+    }
+    if (!i)
+	return NULL;
+
+    res = (Z_DatabaseList *)odr_malloc (eh->o, sizeof(*res));
+    
+    res->num_databases = i;
+    res->databases = (char **)odr_malloc (eh->o, sizeof(*res->databases) * i);
+    i = 0;
+    for (c = n->child; c; c = c->next)
+    {
+	if (!is_numeric_tag (eh, c) != 102)
+	    continue;
+	res->databases[i++] = f_string (eh, c);
+    }
+    return res;
+}
+
+static Z_NetworkAddressIA *f_networkAddressIA(ExpHandle *eh, data1_node *n)
+{
+    Z_NetworkAddressIA *res = (Z_NetworkAddressIA *)
+	odr_malloc (eh->o, sizeof(*res));
+    data1_node *c;
+    
+    res->hostAddress = 0;
+    res->port = 0;
+
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag (eh, c))
+	{
+	case 121: res->hostAddress = f_string (eh, c); break;
+	case 122: res->port = f_integer (eh, c); break;
+	}
+    }
+    return res;
+}
+
+static Z_NetworkAddressOther *f_networkAddressOther(ExpHandle *eh,
+						    data1_node *n)
+{
+    Z_NetworkAddressOther *res = (Z_NetworkAddressOther *)
+	odr_malloc (eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->type = 0;
+    res->address = 0;
+
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag (eh, c))
+	{
+	case 124: res->type = f_string (eh, c); break;
+	case 121: res->address = f_string (eh, c); break;
+	}
+    }
+    return res;
+}
+
+static Z_NetworkAddress **f_networkAddresses(ExpHandle *eh, data1_node *n, 
+					     int *num)
+{
+    Z_NetworkAddress **res = NULL;
+    data1_node *c;
+    int i = 0;
+    
+    *num = 0;
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag (eh, c))
+	{
+	case 120:
+	case 123:
+	    (*num)++;
+	    break;
+	}
+    }
+
+    if (*num)
+	res = (Z_NetworkAddress **) odr_malloc (eh->o, sizeof(*res) * (*num));
+					       
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag (eh, c))
+	{
+	case 120:
+	    res[i] = (Z_NetworkAddress *) odr_malloc (eh->o, sizeof(**res));
+	    res[i]->which = Z_NetworkAddress_iA;
+	    res[i]->u.internetAddress = f_networkAddressIA(eh, c);
+	    i++;
+	    break;
+	case 123:
+	    res[i] = (Z_NetworkAddress *) odr_malloc (eh->o, sizeof(**res));
+	    res[i]->which = Z_NetworkAddress_other;
+	    res[i]->u.other = f_networkAddressOther(eh, c);
+	    i++;
+	    break;
+	}
+    }
+    return res;
+}
+
+static Z_CategoryInfo *f_categoryInfo(ExpHandle *eh, data1_node *n)
+{
+    Z_CategoryInfo *res = (Z_CategoryInfo *)odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->category = 0;
+    res->originalCategory = 0;
+    res->description = 0;
+    res->asn1Module = 0;
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag (eh, c))
+	{
+	case 102: res->category = f_string(eh, c); break;
+	case 302: res->originalCategory = f_string(eh, c); break;
+	case 113: res->description = f_humstring(eh, c); break;
+	case 303: res->asn1Module = f_string (eh, c); break;
+	}
+    }
+    return res;
+}
+
+static Z_CategoryList *f_categoryList(ExpHandle *eh, data1_node *n)
+{
+    Z_CategoryList *res = (Z_CategoryList *)odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->commonInfo = 0;
+    res->num_categories = 0;
+    res->categories = NULL;
+
+    for (c = n->child; c; c = c->next)
+    {
+	int i = 0;
+
+	switch (is_numeric_tag (eh, c))
+	{
+	case 600: res->commonInfo = f_commonInfo(eh, c); break;
+	case 300:
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 301)
+		    continue;
+		(res->num_categories)++;
+	    }
+	    if (res->num_categories)
+		res->categories =
+		    (Z_CategoryInfo **)odr_malloc (eh->o, res->num_categories 
+						   * sizeof(*res->categories));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 301)
+		    continue;
+		res->categories[i++] = f_categoryInfo (eh, n);
+	    }
+	    break;
+	}
+    }
+    assert (res->num_categories && res->categories);
+    return res;
+}
+
+static Z_TargetInfo *f_targetInfo(ExpHandle *eh, data1_node *n)
+{
+    Z_TargetInfo *res = (Z_TargetInfo *)odr_malloc(eh->o, sizeof(*res));
     data1_node *c;
-    static bool_t fl = 0;
 
     res->commonInfo = 0;
     res->name = 0;
     res->recentNews = 0;
     res->icon = 0;
-    res->namedResultSets = &fl;
-    res->multipleDbSearch = &fl;
+    res->namedResultSets = 0;
+    res->multipleDBsearch = 0;
     res->maxResultSets = 0;
     res->maxResultSize = 0;
     res->maxTerms = 0;
@@ -115,54 +683,728 @@ static Z_TargetInfo *f_targetInfo(data1_node *n, int select, ODR o)
     res->dbCombinations = 0;
     res->num_addresses = 0;
     res->addresses = 0;
+    res->num_languages = 0;
+    res->languages = NULL;
     res->commonAccessInfo = 0;
+    
+    for (c = n->child; c; c = c->next)
+    {
+	int i = 0;
+
+	switch (is_numeric_tag (eh, c))
+	{
+	case 600: res->commonInfo = f_commonInfo(eh, c); break;
+	case 102: res->name = f_string(eh, c); break;
+	case 103: res->recentNews = f_humstring(eh, c); break;
+	case 104: res->icon = NULL; break; /* fix */
+	case 105: res->namedResultSets = f_bool(eh, c); break;
+	case 106: res->multipleDBsearch = f_bool(eh, c); break;
+	case 107: res->maxResultSets = f_integer(eh, c); break;
+	case 108: res->maxResultSize = f_integer(eh, c); break;
+	case 109: res->maxTerms = f_integer(eh, c); break;
+	case 110: res->timeoutInterval = f_intunit(eh, c); break;
+	case 111: res->welcomeMessage = f_humstring(eh, c); break;
+	case 112: res->contactInfo = f_contactInfo(eh, c); break;
+	case 113: res->description = f_humstring(eh, c); break;
+	case 114: 
+	    res->num_nicknames = 0;
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 102)
+		    continue;
+		(res->num_nicknames)++;
+	    }
+	    if (res->num_nicknames)
+		res->nicknames =
+		    (char **)odr_malloc (eh->o, res->num_nicknames 
+				* sizeof(*res->nicknames));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 102)
+		    continue;
+		res->nicknames[i++] = f_string (eh, n);
+	    }
+	    break;
+	case 115: res->usageRest = f_humstring(eh, c); break;
+	case 116: res->paymentAddr = f_humstring(eh, c); break;
+	case 117: res->hours = f_humstring(eh, c); break;
+	case 118:
+	    res->num_dbCombinations = 0;
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (!is_numeric_tag(eh, n) != 605)
+		    continue;
+		(res->num_dbCombinations)++;
+	    }
+	    if (res->num_dbCombinations)
+		res->dbCombinations =
+		    (Z_DatabaseList **)odr_malloc (eh->o, res->num_dbCombinations
+				* sizeof(*res->dbCombinations));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (!is_numeric_tag(eh, n) != 605)
+		    continue;
+		res->dbCombinations[i++] = f_databaseList (eh, n);
+	    }
+	    break;
+	case 119: 
+	    res->addresses =
+		f_networkAddresses (eh, c, &res->num_addresses);
+	    break;
+	case 125:
+	    res->num_languages = 0;
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (!is_numeric_tag(eh, n) != 126)
+		    continue;
+		(res->num_languages)++;
+	    }
+	    if (res->num_languages)
+		res->languages = (char **)
+		    odr_malloc (eh->o, res->num_languages *
+				sizeof(*res->languages));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (!is_numeric_tag(eh, n) != 126)
+		    continue;
+		res->languages[i++] = f_string (eh, n);
+	    }
+	    break;
+	case 500: res->commonAccessInfo = f_accessInfo(eh, c); break;
+	}
+    }
+    if (!res->namedResultSets)
+	res->namedResultSets = eh->false_value;
+    if (!res->multipleDBsearch)
+	res->multipleDBsearch = eh->false_value;
+    return res;
+}
 
+static Z_DatabaseInfo *f_databaseInfo(ExpHandle *eh, data1_node *n)
+{
+    Z_DatabaseInfo *res = (Z_DatabaseInfo *)odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->commonInfo = 0;
+    res->name = 0;
+    res->explainDatabase = 0;
+    res->num_nicknames = 0;
+    res->nicknames = 0;
+    res->icon = 0;
+    res->userFee = 0;
+    res->available = 0;
+    res->titleString = 0;
+    res->num_keywords = 0;
+    res->keywords = 0;
+    res->description = 0;
+    res->associatedDbs = 0;
+    res->subDbs = 0;
+    res->disclaimers = 0;
+    res->news = 0;
+    res->u.actualNumber = 0;
+    res->defaultOrder = 0;
+    res->avRecordSize = 0;
+    res->maxRecordSize = 0;
+    res->hours = 0;
+    res->bestTime = 0;
+    res->lastUpdate = 0;
+    res->updateInterval = 0;
+    res->coverage = 0;
+    res->proprietary = 0;
+    res->copyrightText = 0;
+    res->copyrightNotice = 0;
+    res->producerContactInfo = 0;
+    res->supplierContactInfo = 0;
+    res->submissionContactInfo = 0;
+    res->accessInfo = 0;
+    
     for (c = n->child; c; c = c->next)
     {
-	if (c->which != DATA1N_tag || !c->u.tag.element)
+	int i = 0;
+
+	switch (is_numeric_tag (eh, c))
 	{
-	    logf(LOG_WARN, "Malformed explain record");
-	    return 0;
+	case 600: res->commonInfo = f_commonInfo(eh, c); break;
+	case 102: res->name = f_string(eh, c); break;
+	case 226: res->explainDatabase = odr_nullval(); break;
+	case 114:
+	    res->num_nicknames = 0;
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (!is_numeric_tag(eh, n) ||
+		    n->u.tag.element->tag->value.numeric != 102)
+		    continue;
+		(res->num_nicknames)++;
+	    }
+	    if (res->num_nicknames)
+		res->nicknames =
+		    (char **)odr_malloc (eh->o, res->num_nicknames 
+				* sizeof(*res->nicknames));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (!is_numeric_tag(eh, n) ||
+		    n->u.tag.element->tag->value.numeric != 102)
+		    continue;
+		res->nicknames[i++] = f_string (eh, n);
+	    }
+	    break;
+	case 104: res->icon = 0; break;      /* fix */
+	case 201: res->userFee = f_bool(eh, c); break;
+	case 202: res->available = f_bool(eh, c); break;
+	case 203: res->titleString = f_humstring(eh, c); break;
+	case 227:
+	    res->num_keywords = 0;
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (!is_numeric_tag(eh, n) != 1000)
+		    continue;
+		(res->num_keywords)++;
+	    }
+	    if (res->num_keywords)
+		res->keywords =
+		    (Z_HumanString **)odr_malloc (eh->o, res->num_keywords 
+				* sizeof(*res->keywords));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (!is_numeric_tag(eh, n) != 1000)
+		    continue;
+		res->keywords[i++] = f_humstring (eh, n);
+	    }
+	    break;
+	case 113: res->description = f_humstring(eh, c); break;
+	case 205:
+	    res->associatedDbs = f_databaseList (eh, c);
+	    break;
+	case 206:
+	    res->subDbs = f_databaseList (eh, c);
+	    break;
+	case 207: res->disclaimers = f_humstring(eh, c); break;
+	case 103: res->news = f_humstring(eh, c); break;
+	case 209: res->u.actualNumber =
+		      f_recordCount(eh, c, &res->which); break;
+	case 212: res->defaultOrder = f_humstring(eh, c); break;
+	case 213: res->avRecordSize = f_integer(eh, c); break;
+	case 214: res->maxRecordSize = f_integer(eh, c); break;
+	case 215: res->hours = f_humstring(eh, c); break;
+	case 216: res->bestTime = f_humstring(eh, c); break;
+	case 217: res->lastUpdate = f_string(eh, c); break;
+	case 218: res->updateInterval = f_intunit(eh, c); break;
+	case 219: res->coverage = f_humstring(eh, c); break;
+	case 220: res->proprietary = f_bool(eh, c); break;
+	case 221: res->copyrightText = f_humstring(eh, c); break;
+	case 222: res->copyrightNotice = f_humstring(eh, c); break;
+	case 223: res->producerContactInfo = f_contactInfo(eh, c); break;
+	case 224: res->supplierContactInfo = f_contactInfo(eh, c); break;
+	case 225: res->submissionContactInfo = f_contactInfo(eh, c); break;
+	case 500: res->accessInfo = f_accessInfo(eh, c); break;
 	}
-	if (select && !c->u.tag.node_selected)
-	    continue;
-	switch (c->u.tag.element->tag->value.numeric)
+    }
+    if (!res->userFee)
+	res->userFee = eh->false_value;
+    if (!res->available)
+	res->available = eh->true_value;
+    return res;
+}
+
+Z_StringOrNumeric *f_stringOrNumeric (ExpHandle *eh, data1_node *n)
+{
+    Z_StringOrNumeric *res = (Z_StringOrNumeric *)
+	odr_malloc (eh->o, sizeof(*res));
+    data1_node *c;
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag (eh, c))
 	{
-	    case 600: res->commonInfo = f_commonInfo(c, select, o);break;
-	    case 102: res->name = f_string(c, o); break;
-	    case 103: res->recentNews = f_humstring(c, o); break;
-	    case 104: break; /* icon */
-	    case 105: res->namedResultSets = f_bool(c, o); break;
-	    case 106: res->multipleDbSearch = f_bool(c, o); break;
-	    case 107: res->maxResultSets = f_integer(c, o); break;
-	    case 108: res->maxResultSize = f_integer(c, o); break;
-	    case 109: res->maxTerms = f_integer(c, o); break;
-	    case 110: res->timeoutInterval = f_intunit(c, o); break;
-	    case 111: res->welcomeMessage = f_humstring(c, o); break;
-	    case 112: res->contactInfo = f_contactInfo(c, o); break;
-	    case 113: res->description = f_humstring(c, o); break;
-	    case 114: break; /* nicknames */
-	    case 115: res->usageRest = f_humstring(c, o); break;
-	    case 116: res->paymentAddr = f_humstring(c, o); break;
-	    case 117: res->hours = f_humstring(c, o); break;
-	    case 118: break; /* dbcombinations */
-	    case 119: break; /* addresses */
-	    case 500: res->commonAccessInfo = f_accessInfo(c, select, o); break;
-	    default:
-	        logf(LOG_WARN, "Unknown target-info element");
+	case 1001:
+	    res->which = Z_StringOrNumeric_string;
+	    res->u.string = f_string (eh, c);
+	    break;
+	case 1002:
+	    res->which = Z_StringOrNumeric_numeric;
+	    res->u.numeric = f_integer (eh, c);
+	    break;
 	}
     }
     return res;
 }
 
-static Z_DatabaseInfo *f_databaseInfo(data1_node *n, int select, ODR o)
+Z_AttributeDescription *f_attributeDescription (
+    ExpHandle *eh, data1_node *n)
 {
-    return 0;
+    Z_AttributeDescription *res = (Z_AttributeDescription *)
+	odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+    int i = 0;
+	
+    res->name = 0;
+    res->description = 0;
+    res->attributeValue = 0;
+    res->num_equivalentAttributes = 0;
+    res->equivalentAttributes = 0;
+
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag (eh, c))
+	{
+	case 102: res->name = f_string (eh, c); break;
+	case 113: res->description = f_humstring (eh, c); break;
+	case 710: res->attributeValue = f_stringOrNumeric (eh, c); break;
+	case 752: (res->num_equivalentAttributes++); break;
+	}
+    }
+    if (res->num_equivalentAttributes)
+	res->equivalentAttributes = (Z_StringOrNumeric **)
+	    odr_malloc (eh->o, sizeof(*res->equivalentAttributes) *
+			res->num_equivalentAttributes);
+    for (c = n->child; c; c = c->next)
+	if (is_numeric_tag (eh, c) == 752)
+	    res->equivalentAttributes[i++] = f_stringOrNumeric (eh, c);
+    return res;
+}
+
+Z_AttributeType *f_attributeType (ExpHandle *eh, data1_node *n)
+{
+    Z_AttributeType *res = (Z_AttributeType *)
+	odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->name = 0;
+    res->description = 0;
+    res->attributeType = 0;
+    res->num_attributeValues = 0;
+    res->attributeValues = 0;
+
+    for (c = n->child; c; c = c->next)
+    {
+	int i = 0;
+	switch (is_numeric_tag (eh, c))
+	{
+	case 102: res->name = f_string (eh, c); break;
+	case 113: res->description = f_humstring (eh, c); break;
+	case 704: res->attributeType = f_integer (eh, c); break;
+	case 708:
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 709)
+		    continue;
+		(res->num_attributeValues)++;
+	    }
+	    if (res->num_attributeValues)
+		res->attributeValues = (Z_AttributeDescription **)
+		    odr_malloc (eh->o, res->num_attributeValues
+				* sizeof(*res->attributeValues));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 709)
+		    continue;
+		res->attributeValues[i++] = f_attributeDescription (eh, n);
+	    }
+	    break;
+	}
+    }
+    return res;
+}
+
+Z_AttributeSetInfo *f_attributeSetInfo (ExpHandle *eh, data1_node *n)
+{
+    Z_AttributeSetInfo *res = (Z_AttributeSetInfo *)
+	odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->commonInfo = 0;
+    res->attributeSet = 0;
+    res->name = 0;
+    res->num_attributes = 0;
+    res->attributes = 0;
+    res->description = 0;
+    for (c = n->child; c; c = c->next)
+    {
+	int i = 0;
+	switch (is_numeric_tag (eh, c))
+	{
+	case 600: res->commonInfo = f_commonInfo (eh, c); break;
+	case 1000: res->attributeSet = f_oid (eh, c, CLASS_ATTSET); break;
+	case 102: res->name = f_string (eh, c); break;
+	case 750:
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 751)
+		    continue;
+		(res->num_attributes)++;
+	    }
+	    if (res->num_attributes)
+		res->attributes = (Z_AttributeType **)
+		    odr_malloc (eh->o, res->num_attributes
+				* sizeof(*res->attributes));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 751)
+		    continue;
+		res->attributes[i++] = f_attributeType (eh, n);
+	    }
+	    break;
+	case 113: res->description = f_humstring (eh, c); break;
+	}
+    }
+    return res;
 }
 
-Z_ExplainRecord *data1_nodetoexplain(data1_node *n, int select, ODR o)
+Z_OmittedAttributeInterpretation *f_omittedAttributeInterpretation (
+    ExpHandle *eh, data1_node *n)
 {
-    Z_ExplainRecord *res = odr_malloc(o, sizeof(*res));
+    Z_OmittedAttributeInterpretation *res = (Z_OmittedAttributeInterpretation*)
+	odr_malloc (eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->defaultValue = 0;
+    res->defaultDescription = 0;
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag (eh, c))
+	{
+	case 706:
+	    res->defaultValue = f_stringOrNumeric (eh, c);
+	    break;
+	case 113:
+	    res->defaultDescription = f_humstring(eh, c);
+	    break;
+	}
+    }
+    return res;
+}
+
+Z_AttributeValue *f_attributeValue (ExpHandle *eh, data1_node *n)
+{
+    Z_AttributeValue *res = (Z_AttributeValue *)
+	odr_malloc (eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->value = 0;
+    res->description = 0;
+    res->num_subAttributes = 0;
+    res->subAttributes = 0;
+    res->num_superAttributes = 0;
+    res->superAttributes = 0;
+    res->partialSupport = 0;
+    for (c = n->child; c; c = c->next)
+    {
+	int i = 0;
+	switch (is_numeric_tag (eh, c))
+	{
+	case 710:
+	    res->value = f_stringOrNumeric (eh, c);  break;
+	case 113:
+	    res->description = f_humstring (eh, c); break;
+	case 712:
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 713)
+		    continue;
+		(res->num_subAttributes)++;
+	    }
+	    if (res->num_subAttributes)
+		res->subAttributes =
+		    (Z_StringOrNumeric **)
+		    odr_malloc (eh->o, res->num_subAttributes
+				* sizeof(*res->subAttributes));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 713)
+		    continue;
+		res->subAttributes[i++] = f_stringOrNumeric (eh, n);
+	    }
+	    break;
+	case 714:
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 715)
+		    continue;
+		(res->num_superAttributes)++;
+	    }
+	    if (res->num_superAttributes)
+		res->superAttributes =
+		    (Z_StringOrNumeric **)
+		    odr_malloc (eh->o, res->num_superAttributes
+				* sizeof(*res->superAttributes));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 715)
+		    continue;
+		res->superAttributes[i++] = f_stringOrNumeric (eh, n);
+	    }
+	    break;
+	case 711:
+	    res->partialSupport = odr_nullval ();
+	    break;
+	}
+    }
+    return res;
+}
+
+Z_AttributeTypeDetails *f_attributeTypeDetails (ExpHandle *eh, data1_node *n)
+{
+    Z_AttributeTypeDetails *res = (Z_AttributeTypeDetails *)
+	odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+    res->attributeType = 0;
+    res->defaultIfOmitted = 0;
+    res->num_attributeValues = 0;
+    res->attributeValues = 0;
+    for (c = n->child; c; c = c->next)
+    {
+	int i = 0;
+	switch (is_numeric_tag (eh, c))
+	{
+	case 704: res->attributeType = f_integer (eh, c); break;
+	case 705:
+	    res->defaultIfOmitted = f_omittedAttributeInterpretation (eh, c);
+	    break;
+	case 708:
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 709)
+		    continue;
+		(res->num_attributeValues)++;
+	    }
+	    if (res->num_attributeValues)
+		res->attributeValues =
+		    (Z_AttributeValue **)
+		    odr_malloc (eh->o, res->num_attributeValues
+				* sizeof(*res->attributeValues));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 709)
+		    continue;
+		res->attributeValues[i++] = f_attributeValue (eh, n);
+	    }
+	    break;
+	}
+    }
+    return res;
+}
+
+Z_AttributeSetDetails *f_attributeSetDetails (ExpHandle *eh, data1_node *n)
+{
+    Z_AttributeSetDetails *res = (Z_AttributeSetDetails *)
+	odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+    
+    res->attributeSet = 0;
+    res->num_attributesByType = 0;
+    res->attributesByType = 0;
+    for (c = n->child; c; c = c->next)
+    {
+	int i = 0;
+	switch (is_numeric_tag (eh, c))
+	{
+	case 1000: res->attributeSet = f_oid(eh, c, CLASS_ATTSET); break;
+	case 702:
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 703)
+		    continue;
+		(res->num_attributesByType)++;
+	    }
+	    if (res->num_attributesByType)
+		res->attributesByType =
+		    (Z_AttributeTypeDetails **)
+		    odr_malloc (eh->o, res->num_attributesByType
+				* sizeof(*res->attributesByType));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 703)
+		    continue;
+		res->attributesByType[i++] = f_attributeTypeDetails (eh, n);
+	    }
+	    break;
+	}
+    }
+    return res;
+}
+
+Z_AttributeValueList *f_attributeValueList (ExpHandle *eh, data1_node *n)
+{
+    Z_AttributeValueList *res = (Z_AttributeValueList *)
+	odr_malloc (eh->o, sizeof(*res));
+    data1_node *c;
+    int i = 0;
+
+    res->num_attributes = 0;
+    res->attributes = 0;
+    for (c = n->child; c; c = c->next)
+	if (is_numeric_tag (eh, c) == 710)
+	    (res->num_attributes)++;
+    if (res->num_attributes)
+    {
+	res->attributes = (Z_StringOrNumeric **)
+	    odr_malloc (eh->o, res->num_attributes * sizeof(*res->attributes));
+    }
+    for (c = n->child; c; c = c->next)
+	if (is_numeric_tag(eh, c) == 710)
+	    res->attributes[i++] = f_stringOrNumeric (eh, c);
+    return res;
+}
+
+Z_AttributeOccurrence *f_attributeOccurrence (ExpHandle *eh, data1_node *n)
+{
+    Z_AttributeOccurrence *res = (Z_AttributeOccurrence *)
+	odr_malloc (eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->attributeSet = 0;
+    res->attributeType = 0;
+    res->mustBeSupplied = 0;
+    res->which = Z_AttributeOcc_any_or_none;
+    res->attributeValues.any_or_none = odr_nullval ();
+
+    for (c = n->child; c; c = c->next)
+    {
+	switch (is_numeric_tag (eh, c))
+	{
+	case 1000:
+	    res->attributeSet = f_oid (eh, c, CLASS_ATTSET); break;
+	case 704:
+	    res->attributeType = f_integer (eh, c); break;
+	case 720:
+	    res->mustBeSupplied = odr_nullval (); break;
+	case 721:
+	    res->which = Z_AttributeOcc_any_or_none;
+	    res->attributeValues.any_or_none = odr_nullval ();
+	    break;
+	case 722:
+	    res->which = Z_AttributeOcc_specific;
+	    res->attributeValues.specific = f_attributeValueList (eh, c);
+	    break;
+	}
+    }
+    return res;
+}
+
+Z_AttributeCombination *f_attributeCombination (ExpHandle *eh, data1_node *n)
+{
+    Z_AttributeCombination *res = (Z_AttributeCombination *)
+	odr_malloc (eh->o, sizeof(*res));
+    data1_node *c;
+    int i = 0;
+
+    res->num_occurrences = 0;
+    res->occurrences = 0;
+    for (c = n->child; c; c = c->next)
+	if (is_numeric_tag (eh, c) == 719)
+	    (res->num_occurrences)++;
+    if (res->num_occurrences)
+    {
+	res->occurrences = (Z_AttributeOccurrence **)
+	    odr_malloc (eh->o, res->num_occurrences * sizeof(*res->occurrences));
+    }
+    for (c = n->child; c; c = c->next)
+	if (is_numeric_tag(eh, c) == 719)
+	    res->occurrences[i++] = f_attributeOccurrence (eh, c);
+    assert (res->num_occurrences);
+    return res;
+}
+
+Z_AttributeCombinations *f_attributeCombinations (ExpHandle *eh, data1_node *n)
+{
+    Z_AttributeCombinations *res = (Z_AttributeCombinations *)
+	odr_malloc (eh->o, sizeof(*res));
+    data1_node *c;
+    res->defaultAttributeSet = 0;
+    res->num_legalCombinations = 0;
+    res->legalCombinations = 0;
+
+    for (c = n->child; c; c = c->next)
+    {
+	int i = 0;
+	switch (is_numeric_tag (eh, c))
+	{
+	case 1000:
+	    res->defaultAttributeSet = f_oid (eh, c, CLASS_ATTSET);
+	    break;
+	case 717:
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 718)
+		    continue;
+		(res->num_legalCombinations)++;
+	    }
+	    if (res->num_legalCombinations)
+		res->legalCombinations =
+		    (Z_AttributeCombination **)
+		    odr_malloc (eh->o, res->num_legalCombinations
+				* sizeof(*res->legalCombinations));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 718)
+		    continue;
+		res->legalCombinations[i++] = f_attributeCombination (eh, n);
+	    }
+	    break;
+	}
+    }
+    assert (res->num_legalCombinations);
+    return res;
+}
+
+Z_AttributeDetails *f_attributeDetails (ExpHandle *eh, data1_node *n)
+{
+    Z_AttributeDetails *res = (Z_AttributeDetails *)
+	odr_malloc(eh->o, sizeof(*res));
+    data1_node *c;
+
+    res->commonInfo = 0;
+    res->databaseName = 0;
+    res->num_attributesBySet = 0;
+    res->attributesBySet = NULL;
+    res->attributeCombinations = NULL;
+
+    for (c = n->child; c; c = c->next)
+    {
+	int i = 0;
+	switch (is_numeric_tag (eh, c))
+	{
+	case 600: res->commonInfo = f_commonInfo(eh, c); break;
+	case 102: res->databaseName = f_string (eh, c); break;
+	case 700:
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 701)
+		    continue;
+		(res->num_attributesBySet)++;
+	    }
+	    if (res->num_attributesBySet)
+		res->attributesBySet =
+		    (Z_AttributeSetDetails **)
+		    odr_malloc (eh->o, res->num_attributesBySet
+				* sizeof(*res->attributesBySet));
+	    for (n = c->child; n; n = n->next)
+	    {
+		if (is_numeric_tag(eh, n) != 701)
+		    continue;
+		res->attributesBySet[i++] = f_attributeSetDetails (eh, n);
+	    }
+	    break;
+	case 716:
+	    res->attributeCombinations = f_attributeCombinations (eh, c);
+	    break;
+	}
+    }
+    return res;
+}
+
+Z_ExplainRecord *data1_nodetoexplain (data1_handle dh, data1_node *n,
+				      int select, ODR o)
+{
+    ExpHandle eh;
+    Z_ExplainRecord *res = (Z_ExplainRecord *)odr_malloc(o, sizeof(*res));
+
+    eh.dh = dh;
+    eh.select = select;
+    eh.o = o;
+    eh.false_value = (int *)odr_malloc(eh.o, sizeof(eh.false_value));
+    *eh.false_value = 0;
+    eh.true_value = (int *)odr_malloc(eh.o, sizeof(eh.true_value));
+    *eh.true_value = 1;
 
     assert(n->which == DATA1N_root);
     if (strcmp(n->u.root.type, "explain"))
@@ -170,25 +1412,37 @@ Z_ExplainRecord *data1_nodetoexplain(data1_node *n, int select, ODR o)
 	logf(LOG_WARN, "Attempt to convert a non-Explain record");
 	return 0;
     }
-    if (n->num_children != 1 || n->child->which != DATA1N_tag ||
-	!n->u.tag.element)
-    {
-	logf(LOG_WARN, "Explain record should have one exactly one child");
-	return 0;
-    }
-    switch (n->child->u.tag.element->tag->value.numeric)
+    for (n = n->child; n; n = n->next)
     {
-	case 0: res->which = Z_Explain_targetInfo;
-	    if (!(res->u.targetInfo = f_targetInfo(n->child, select, o)))
+	switch (is_numeric_tag (&eh, n))
+	{
+	case 1:
+	    res->which = Z_Explain_categoryList;
+	    if (!(res->u.categoryList = f_categoryList(&eh, n)))
 		return 0;
-	    break;
-	case 1: res->which = Z_Explain_databaseInfo;
-	    if (!(res->u.databaseInfo = f_databaseInfo(n->child, select, o)))
+	    return res;	    
+	case 2:
+	    res->which = Z_Explain_targetInfo;
+	    if (!(res->u.targetInfo = f_targetInfo(&eh, n)))
 		return 0;
-	    break;
-	default:
-	    logf(LOG_WARN, "Unknown explain category");
-	    return 0;
+	    return res;
+	case 3:
+	    res->which = Z_Explain_databaseInfo;
+	    if (!(res->u.databaseInfo = f_databaseInfo(&eh, n)))
+		return 0;
+	    return res;
+	case 7:
+	    res->which = Z_Explain_attributeSetInfo;
+	    if (!(res->u.attributeSetInfo = f_attributeSetInfo(&eh, n)))
+		return 0;
+	    return res;	    
+	case 10:
+	    res->which = Z_Explain_attributeDetails;
+	    if (!(res->u.attributeDetails = f_attributeDetails(&eh, n)))
+		return 0;
+	    return res;
+	}
     }
-    return res;
+    logf(LOG_WARN, "No category in Explain record");
+    return 0;
 }