added parameter create to initializer of TableBlockStorage (bug 4115)

Utilities/JrnTests/JrnTest.cc

@@ -77,7 +77,7 @@ void testTable2(void)
 {
 	char *val=new char[40];
 	TableBlockStorage *t;
-	t = new TableBlockStorage("big_file.test", 4, 40, 20000, 5,28,0);
+	t = new TableBlockStorage("big_file.test", 4, 40, 20000, 5,28,0,true);
 	int i;
 	for(i=1;i<20;i++)
 	{
@@ -94,12 +94,13 @@ void testTable2(void)
 	{
 		if(t->FindKeyValue((char*)&i,val)!=0) printf("%s, ",val);
 	}
-	printf("\ncurrent block = %d\n",t->cur_block);
+	printf("\ncurrent block = %d, rewriting first 7 with values=keys+10\n",t->cur_block);
 	for(i=1;i<8;i++)
 	{
 		sprintf(val,"%d",i+10);
 		t->AddRow((char*)&i,val);
 	}
+	printf("deleteing 8-10 elements\n");
 	for(i=8;i<11;i++)
 	{
 		t->DelRow((char*)&i);
@@ -108,7 +109,7 @@ void testTable2(void)
 	{
 		if(t->FindKeyValue((char*)&i,val)!=0) printf("%s, ",val);
 	}
-	printf("\ncurrent block = %d\n",t->cur_block);
+	printf("\ncurrent block = %d, rewriting 3-10 elements with values=keys+40\n",t->cur_block);
 	for(i=3;i<11;i++)
 	{
 		sprintf(val,"%d",i+40);
@@ -128,11 +129,8 @@ void testTable2(void)
 		if(t->FindKeyValue((char*)&i,val)!=0) printf("%s, ",val);
 	}
 	printf("\ncurrent block = %d\n",t->cur_block);
-
+	printf("after reopen:\n");
 	t->Open("big_file.test", 4, 40, 20000, 5,28,0);
-	i=11;
-	sprintf(val,"%d",i);
-	t->AddRow((char*)&i,val);
 	for(i=1;i<20;i++)
 	{
 		if(t->FindKeyValue((char*)&i,val)!=0) printf("%s, ",val);

include/Storages.h

@@ -80,13 +80,13 @@ class TableBlockStorage
 {
 	int max;
 	TableBlockStorageElem** mem;
-	FILE *file;
-	int inf_size, k_size, lim,seekpos;
+	int k_size, lim,seekpos;
 	int size,block_size,block_number,full_size;
 	public:
-		int cur_block;
+		FILE *file;
+		int cur_block,inf_size;
 		TableBlockStorage();
-		TableBlockStorage(const char* name, int key_sz, int inf_sz, int sz, int block_num, int block_lim, int seek);
+		TableBlockStorage(const char* name, int key_sz, int inf_sz, int sz, int block_num, int block_lim, int seek, bool create=false);
 		~TableBlockStorage();
 	private:
 		void filewrite(TableBlockStorageElem* tbl,int seek, bool needflush=true);

src/Various/TableBlockStorage.cc

@@ -53,11 +53,14 @@ TableBlockStorage::TableBlockStorage()
 	file=NULL;
 }
 
-TableBlockStorage::TableBlockStorage(const char* name, int key_sz, int inf_sz, int sz, int block_num, int block_lim, int seek)
+TableBlockStorage::TableBlockStorage(const char* name, int key_sz, int inf_sz, int sz, int block_num, int block_lim, int seek, bool create)
 {
 	file=NULL;
 	if(!Open(name, key_sz, inf_sz, sz, block_num, block_lim, seek))
-		Create(name, key_sz, inf_sz, sz, block_num, block_lim, seek);
+		if(create)
+			Create(name, key_sz, inf_sz, sz, block_num, block_lim, seek);
+		else
+			file=NULL;
 }
 
 TableBlockStorage::~TableBlockStorage()