Annotation of parser3/src/types/pa_vhashfile.C, revision 1.24
1.1 parser 1: /** @file
2: Parser: @b table class.
3:
1.20 paf 4: Copyright(c) 2001, 2002 ArtLebedev Group (http://www.artlebedev.com)
1.19 paf 5: Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru)
1.1 parser 6: */
7:
1.24 ! paf 8: static const char* IDENT="$Date: 2003/11/06 09:56:17 $";
1.1 parser 9:
10: #include "pa_vtable.h"
11: #include "pa_vstring.h"
12: #include "pa_vhashfile.h"
13: #include "pa_threads.h"
1.8 parser 14: #include "pa_globals.h"
1.1 parser 15:
16: // methods
17:
1.22 paf 18: void check(const char *step, apr_status_t status) {
19: if(status==APR_SUCCESS)
20: return;
21:
22: throw Exception("todo.todo",
23: 0,
24: "%s error: %d", step, status);
25: }
26:
27: void VHashfile::open(const String& afile_name) {
28: check("apr_sdbm_open", apr_sdbm_open(&db, afile_name.cstr(String::L_FILE_SPEC),
29: APR_WRITE|APR_CREATE,
30: 0664, 0));
31: }
32:
33: VHashfile::~VHashfile() {
34: if(db)
35: check("apr_sdbm_close", apr_sdbm_close(db));
36: }
37:
38: void VHashfile::clear() {
39: }
40:
1.8 parser 41: void VHashfile::put_field(const String& aname, Value *avalue) {
42: time_t time_to_die=0;
43: const String *value_string;
44:
1.23 paf 45: if(HashStringValue *hash=avalue->get_hash()) {
46: if(Value *value_value=hash->get(value_name)) {
1.9 parser 47: if(value_value->get_junction())
1.23 paf 48: throw Exception(0,
49: 0,
50: VALUE_NAME" must not be code");
1.8 parser 51:
52: value_string=&value_value->as_string();
53:
1.23 paf 54: if(Value *expires_value=hash->get(expires_name))
1.8 parser 55: time_to_die=time(0)+(time_t)expires_value->as_double();
56: } else
1.23 paf 57: throw Exception(0,
1.8 parser 58: &aname,
1.23 paf 59: "put hash value must contain ."VALUE_NAME);
1.8 parser 60: } else
61: value_string=&avalue->as_string();
1.5 parser 62:
1.23 paf 63: // get_table_ptr(&aname)->put(aname, *value_string, time_to_die);
64:
65: apr_sdbm_datum_t key;
66: key.dptr=const_cast<char*>(aname.cstr());
1.24 ! paf 67: key.dsize=aname.length();
1.23 paf 68:
69: apr_sdbm_datum_t value;
70: value.dptr=const_cast<char*>(value_string->cstr());
1.24 ! paf 71: value.dsize=value_string->length();
1.23 paf 72:
73: // * APR_SDBM_INSERT return an error if the record exists
74: check("apr_sdbm_store", apr_sdbm_store(db, key, value, APR_SDBM_REPLACE));
1.1 parser 75: }
76:
1.11 paf 77: Value *VHashfile::get_field(const String& aname) {
1.23 paf 78: apr_sdbm_datum_t key;
79: key.dptr=const_cast<char*>(aname.cstr());
1.24 ! paf 80: key.dsize=aname.length();
1.23 paf 81:
82: apr_sdbm_datum_t value;
83:
84: check("apr_sdbm_fetch", apr_sdbm_fetch(db, &value, key));
85:
86: if(value.dptr)
1.24 ! paf 87: return new VString(*new String(pa_strdup(value.dptr, value.dsize)));
1.3 parser 88: else
89: return 0;
1.24 ! paf 90: }
! 91:
! 92: void VHashfile::remove(const String& aname) {
! 93: apr_sdbm_datum_t key;
! 94: key.dptr=const_cast<char*>(aname.cstr());
! 95: key.dsize=aname.length();
! 96:
! 97: check("apr_sdbm_delete", apr_sdbm_delete(db, key));
1.1 parser 98: }
99:
1.22 paf 100: HashStringValue *VHashfile::get_hash(const String *source) {
101: #if LATER
1.17 paf 102: DB_Cursor cursor(*get_table_ptr(source), source);
1.11 paf 103:
1.22 paf 104: HashStringValue& result=*NEW HashStringValue(pool());
1.4 parser 105:
106: while(true) {
1.5 parser 107: String *key;
108: String *data;
1.11 paf 109: if(!cursor.get(pool(), key, data, DB_NEXT))
1.4 parser 110: break;
111:
1.13 paf 112: if(!key)
113: continue; // expired
114:
115: result.put(*key, NEW VString(*data));
1.4 parser 116: }
117:
118: return &result;
1.22 paf 119: #endif
120: return 0;
1.1 parser 121: }
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