turned images_alt_txt back to images_alt_sxt because it is not necessary

to index the alt text. Indexed image Text is in images_text_t

defaults/solr.collection.schema

@@ -249,7 +249,7 @@ images_urlstub_sxt
 images_protocol_sxt
 
 ## all image link alt tag
-images_alt_txt
+images_alt_sxt
 
 ## size of images:height
 images_height_val

source/net/yacy/search/query/QueryGoal.java

@@ -252,7 +252,6 @@ public class QueryGoal {
         
         // combine these queries for all relevant fields
         q.append(" AND (");
-        q.append('(').append(CollectionSchema.images_alt_txt.getSolrFieldName()).append(':').append(w).append("^20.0) OR ");
         q.append('(').append(CollectionSchema.images_text_t.getSolrFieldName()).append(':').append(w).append("^10.0) OR ");
         q.append('(').append(CollectionSchema.text_t.getSolrFieldName()).append(':').append(w).append(')');
         q.append(')');

source/net/yacy/search/query/SearchEvent.java

@@ -1414,7 +1414,7 @@ public final class SearchEvent {
         // check if the match was made in the url or in the image links
         if (ms == null) throw new MalformedURLException("nUll");
         SolrDocument doc = ms.getNode().getDocument();
-        Collection<Object> alt = doc.getFieldValues(CollectionSchema.images_alt_txt.getSolrFieldName());
+        Collection<Object> alt = doc.getFieldValues(CollectionSchema.images_alt_sxt.getSolrFieldName());
         Collection<Object> img = doc.getFieldValues(CollectionSchema.images_urlstub_sxt.getSolrFieldName());
         Collection<Object> prt = doc.getFieldValues(CollectionSchema.images_protocol_sxt.getSolrFieldName());
         if (img != null) {

source/net/yacy/search/schema/CollectionConfiguration.java

@@ -606,7 +606,7 @@ public class CollectionConfiguration extends SchemaConfiguration implements Seri
             if (allAttr || contains(CollectionSchema.imagescount_i)) add(doc, CollectionSchema.imagescount_i, imagesc.size());
             if (allAttr || contains(CollectionSchema.images_protocol_sxt)) add(doc, CollectionSchema.images_protocol_sxt, protocolList2indexedList(imgprots));
             if (allAttr || contains(CollectionSchema.images_urlstub_sxt)) add(doc, CollectionSchema.images_urlstub_sxt, imgstubs);
-            if (allAttr || contains(CollectionSchema.images_alt_txt)) add(doc, CollectionSchema.images_alt_txt, imgalts);
+            if (allAttr || contains(CollectionSchema.images_alt_sxt)) add(doc, CollectionSchema.images_alt_sxt, imgalts);
             if (allAttr || contains(CollectionSchema.images_height_val)) add(doc, CollectionSchema.images_height_val, imgheights);
             if (allAttr || contains(CollectionSchema.images_width_val)) add(doc, CollectionSchema.images_width_val, imgwidths);
             if (allAttr || contains(CollectionSchema.images_pixel_val)) add(doc, CollectionSchema.images_pixel_val, imgpixels);

source/net/yacy/search/schema/CollectionSchema.java

@@ -123,7 +123,7 @@ public enum CollectionSchema implements SchemaDeclaration {
     images_text_t(SolrType.text_general, true, true, false, false, true, "all text/words appearing in image alt texts or the tokenized url"),
     images_urlstub_sxt(SolrType.string, true, true, true, false, true, "all image links without the protocol and '://'"),
     images_protocol_sxt(SolrType.string, true, true, true, false, false, "all image link protocols"),
-    images_alt_txt(SolrType.text_general, true, true, true, false, true, "all image link alt tag"),
+    images_alt_sxt(SolrType.string, true, true, true, false, true, "all image link alt tag"), // no need to index this; don't turn it into a txt field; use images_text_t instead
     images_height_val(SolrType.num_integer, true, true, true, false, false, "size of images:height"),
     images_width_val(SolrType.num_integer, true, true, true, false, false, "size of images:width"),
     images_pixel_val(SolrType.num_integer, true, true, true, false, false, "size of images as number of pixels (easier for a search restriction than with and height)"),