Simplify some code in fts5_expr.c. Add some extra test cases for the same.

FossilOrigin-Name: 7cc2d60dce90b8d4dca35708e33002ae6387806e

ext/fts5/fts5_expr.c

@@ -746,48 +746,61 @@ static int fts5ExprNearTest(
 ** Initialize all term iterators in the pNear object. If any term is found
 ** to match no documents at all, return immediately without initializing any
 ** further iterators.
+**
+** If an error occurs, return an SQLite error code. Otherwise, return
+** SQLITE_OK. It is not considered an error if some term matches zero
+** documents.
 */
 static int fts5ExprNearInitAll(
   Fts5Expr *pExpr,
   Fts5ExprNode *pNode
 ){
   Fts5ExprNearset *pNear = pNode->pNear;
-  int i, j;
-  int rc = SQLITE_OK;
-  int bEof = 1;
+  int i;
 
   assert( pNode->bNomatch==0 );
-  for(i=0; rc==SQLITE_OK && i<pNear->nPhrase; i++){
+  for(i=0; i<pNear->nPhrase; i++){
     Fts5ExprPhrase *pPhrase = pNear->apPhrase[i];
-    for(j=0; j<pPhrase->nTerm; j++){
-      Fts5ExprTerm *pTerm = &pPhrase->aTerm[j];
-      Fts5ExprTerm *p;
+    if( pPhrase->nTerm==0 ){
+      pNode->bEof = 1;
+      return SQLITE_OK;
+    }else{
+      int j;
+      for(j=0; j<pPhrase->nTerm; j++){
+        Fts5ExprTerm *pTerm = &pPhrase->aTerm[j];
+        Fts5ExprTerm *p;
+        int bHit = 0;
 
-      for(p=pTerm; p && rc==SQLITE_OK; p=p->pSynonym){
-        if( p->pIter ){
-          sqlite3Fts5IterClose(p->pIter);
-          p->pIter = 0;
+        for(p=pTerm; p; p=p->pSynonym){
+          int rc;
+          if( p->pIter ){
+            sqlite3Fts5IterClose(p->pIter);
+            p->pIter = 0;
+          }
+          rc = sqlite3Fts5IndexQuery(
+              pExpr->pIndex, p->zTerm, (int)strlen(p->zTerm),
+              (pTerm->bPrefix ? FTS5INDEX_QUERY_PREFIX : 0) |
+              (pExpr->bDesc ? FTS5INDEX_QUERY_DESC : 0),
+              pNear->pColset,
+              &p->pIter
+          );
+          assert( (rc==SQLITE_OK)==(p->pIter!=0) );
+          if( rc!=SQLITE_OK ) return rc;
+          if( 0==sqlite3Fts5IterEof(p->pIter) ){
+            bHit = 1;
+          }
         }
-        rc = sqlite3Fts5IndexQuery(
-            pExpr->pIndex, p->zTerm, (int)strlen(p->zTerm),
-            (pTerm->bPrefix ? FTS5INDEX_QUERY_PREFIX : 0) |
-            (pExpr->bDesc ? FTS5INDEX_QUERY_DESC : 0),
-            pNear->pColset,
-            &p->pIter
-        );
-        assert( rc==SQLITE_OK || p->pIter==0 );
-        if( p->pIter && 0==sqlite3Fts5IterEof(p->pIter) ){
-          bEof = 0;
+
+        if( bHit==0 ){
+          pNode->bEof = 1;
+          return SQLITE_OK;
         }
       }
-
-      if( bEof ) break;
     }
-    if( bEof ) break;
   }
 
-  pNode->bEof = bEof;
-  return rc;
+  pNode->bEof = 0;
+  return SQLITE_OK;
 }
 
 /*

ext/fts5/test/fts5prefix.test

@@ -9,7 +9,7 @@
 #
 #***********************************************************************
 #
-# This file containst tests focused on prefix indexes.
+# This file contains tests focused on prefix indexes.
 #
 
 source [file join [file dirname [info script]] fts5_common.tcl]

ext/fts5/test/fts5simple2.test

@@ -332,6 +332,41 @@ do_execsql_test 16.0 {
   DELETE FROM t2;
 }
 
+#-------------------------------------------------------------------------
+#
+reset_db
+do_execsql_test 17.0 {
+  CREATE VIRTUAL TABLE t2 USING fts5(x, y);
+  BEGIN;
+    INSERT INTO t2 VALUES('a aa aaa', 'b bb bbb');
+    INSERT INTO t2 VALUES('a aa aaa', 'b bb bbb');
+    INSERT INTO t2 VALUES('a aa aaa', 'b bb bbb');
+  COMMIT;
+}
+do_execsql_test 17.1 { SELECT * FROM t2('y:a*') WHERE rowid BETWEEN 10 AND 20 }
+do_execsql_test 17.2 {
+  BEGIN;
+    INSERT INTO t2 VALUES('a aa aaa', 'b bb bbb');
+    SELECT * FROM t2('y:a*') WHERE rowid BETWEEN 10 AND 20 ;
+}
+do_execsql_test 17.3 {
+  COMMIT
+}
+
+reset_db
+do_execsql_test 17.4 {
+  CREATE VIRTUAL TABLE t2 USING fts5(x, y);
+  BEGIN;
+    INSERT INTO t2 VALUES('a aa aaa', 'b bb bbb');
+    INSERT INTO t2 VALUES('a aa aaa', 'b bb bbb');
+    SELECT * FROM t2('y:a*') WHERE rowid>66;
+}
+do_execsql_test 17.5 { SELECT * FROM t2('x:b* OR y:a*') }
+do_execsql_test 17.5 { COMMIT ; SELECT * FROM t2('x:b* OR y:a*') }
+do_execsql_test 17.6 { 
+  SELECT * FROM t2('x:b* OR y:a*') WHERE rowid>55
+}
+
 #db eval {SELECT rowid, fts5_decode_none(rowid, block) aS r FROM t2_data} {puts $r}
   
 finish_test

manifest

@@ -1,5 +1,5 @@
-C Add\sthe\ssqlite3_snapshot_recover()\sinterface\sand\srelated\sfunctionality.
-D 2016-11-26T19:44:40.853
+C Simplify\ssome\scode\sin\sfts5_expr.c.\sAdd\ssome\sextra\stest\scases\sfor\sthe\ssame.
+D 2016-11-28T14:52:23.554
 F Makefile.in 6b572807415d3f0a379cebc9461416d8df4a12c8
 F Makefile.linux-gcc 7bc79876b875010e8c8f9502eb935ca92aa3c434
 F Makefile.msc bb4d970894abbbe0e88d00aac29bd52af8bc95f4
@@ -102,7 +102,7 @@ F ext/fts5/fts5Int.h b2eda36e0f224365c8e23dc8f559311834f1c13f
 F ext/fts5/fts5_aux.c 67acf8d51723cf28ffc3828210ba662df4b8d267
 F ext/fts5/fts5_buffer.c 4c1502d4c956cd092c89ce4480867f9d8bf325cd
 F ext/fts5/fts5_config.c 5af9c360e99669d29f06492c370892394aba0857
-F ext/fts5/fts5_expr.c e12421946774482f4d49e334c974571177adbc70
+F ext/fts5/fts5_expr.c 34ece379a83efd047e0a0fc170e476ba76b0404a
 F ext/fts5/fts5_hash.c 880998e596b60f078348d48732ca4ad9a90caad2
 F ext/fts5/fts5_index.c fdbe46da11e81c1817cd4cb2de25ffdb4dd83711
 F ext/fts5/fts5_main.c f85281445dcf8be32d18841c93a6f90fe27dbfe2
@@ -175,14 +175,14 @@ F ext/fts5/test/fts5phrase.test f6d1d464da5beb25dc56277aa4f1d6102f0d9a2f
 F ext/fts5/test/fts5plan.test 6a55ecbac9890765b0e16f8c421c7e0888cfe436
 F ext/fts5/test/fts5porter.test 7cdc07bef301d70eebbfa75dcaf45c3680e1d0e1
 F ext/fts5/test/fts5porter2.test 2e65633d58a1c525d5af0f6c01e5a59155bb3487
-F ext/fts5/test/fts5prefix.test efd42e00bb8e8a36383f25c838185508681c093f
+F ext/fts5/test/fts5prefix.test 6ef7e875738412907b17687d25db39a25cbdaba4
 F ext/fts5/test/fts5query.test f5ec25f5f2fbb70033424113cdffc101b1985a40
 F ext/fts5/test/fts5rank.test 2bdc0c5f22ccc1f9dbe9f4d0b82a491dce6f8a32
 F ext/fts5/test/fts5rebuild.test 03935f617ace91ed23a6099c7c74d905227ff29b
 F ext/fts5/test/fts5restart.test c17728fdea26e7d0f617d22ad5b4b2862b994c17
 F ext/fts5/test/fts5rowid.test 16908a99d6efc9ba21081b4f2b86b3fc699839a6
 F ext/fts5/test/fts5simple.test 5da9b15ed534eb0be9f279d8a2bb2e24d30e4e38
-F ext/fts5/test/fts5simple2.test 98377ae1ff7749a42c21fe1a139c1ed312522c46
+F ext/fts5/test/fts5simple2.test 00839031878f52391562594fdab0503e424ee071
 F ext/fts5/test/fts5simple3.test 25faa8cb8ad470c6f01f670bcc1317c19a89f091
 F ext/fts5/test/fts5synonym.test 6475d189c2e20d60795808f83e36bf9318708d48
 F ext/fts5/test/fts5synonym2.test aa4c43bd3b691ff80f658cb064f5ab40690e834e
@@ -1535,8 +1535,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P a4205a83e4ed977a89ecae665604993711f7dd3f e2c4bdf54fc1b9605226c7d6c79ef4f8302d6213
-R e3a0631511335a83b0a91c37cc46bd7e
-T +closed e2c4bdf54fc1b9605226c7d6c79ef4f8302d6213
-U drh
-Z 12f51558a308f260b27f24c87a70fdb2
+P b70c85ce6d07b08e13f4ea99edb8f4855a6d7580
+R e2d59b569b83323f61b57e394e54a92d
+U dan
+Z da120d25a7b116db8d62d3eda200a581

manifest.uuid

@@ -1 +1 @@
-b70c85ce6d07b08e13f4ea99edb8f4855a6d7580
+7cc2d60dce90b8d4dca35708e33002ae6387806e