diff options
Diffstat (limited to '3rdparty/clucene/src/CLucene/document/Document.cpp')
| -rw-r--r-- | 3rdparty/clucene/src/CLucene/document/Document.cpp | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/3rdparty/clucene/src/CLucene/document/Document.cpp b/3rdparty/clucene/src/CLucene/document/Document.cpp new file mode 100644 index 000000000..a0ce03942 --- /dev/null +++ b/3rdparty/clucene/src/CLucene/document/Document.cpp @@ -0,0 +1,237 @@ +/*------------------------------------------------------------------------------ +* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team +* +* Distributable under the terms of either the Apache License (Version 2.0) or +* the GNU Lesser General Public License, as specified in the COPYING file. +------------------------------------------------------------------------------*/ +#include "CLucene/StdHeader.h" +#include "Document.h" +#include "Field.h" +#include "CLucene/util/StringBuffer.h" + +CL_NS_USE(util) +CL_NS_DEF(document) + + DocumentFieldEnumeration::DocumentFieldList::DocumentFieldList(Field* f, DocumentFieldList* n ) { + //Func - Constructor + //Pre - f != NULL + // n may be NULL + //Post - Instance has been created + CND_PRECONDITION(f != NULL, "f is NULL"); + + field = f; + next = n; + } + DocumentFieldEnumeration::DocumentFieldList::~DocumentFieldList(){ + //Func - Destructor + //Pre - true + //Post - Instance has been destroyed + + // Instead of recursively deleting the field list we do + // it iteratively to avoid stack overflows when + // dealing with several thousands of fields. + + if (!field) { + return; // nothing to do; deleted by different invocation of dtor + } + + DocumentFieldList* cur = next; + while (cur != NULL) + { + DocumentFieldList* temp = cur->next; + cur->next = NULL; + + _CLDELETE(cur); + cur = temp; + } + _CLDELETE(field); + } + + + DocumentFieldEnumeration::DocumentFieldEnumeration(const DocumentFieldList* fl){ + //Func - Constructor + //Pre - fl may be NULL + //Post - Instance has been created + + fields = fl; + } + + DocumentFieldEnumeration::~DocumentFieldEnumeration(){ + //Func - Destructor + //Pre - true + //Post - Instance has been destroyed + } + + bool DocumentFieldEnumeration::hasMoreElements() const { + return fields == NULL ? false : true; + } + + Field* DocumentFieldEnumeration::nextElement() { + //Func - Return the next element in the enumeration + //Pre - true + //Post - The next element is returned or NULL + + + Field* result = NULL; + //Check if fields is still valid + if (fields){ + result = fields->field; + fields = fields->next; + } + return result; + } + + /** Constructs a new document with no fields. */ + Document::Document(){ + //Func - Constructor + //Pre - true + //Post - Instance has been created + boost = 1.0f; + fieldList = NULL; + } + + Document::~Document(){ + //Func - Destructor + //Pre - true + //Post - Instance has been destroyed + boost = 1.0f; + _CLDELETE(fieldList); + } + + void Document::clear(){ + _CLDELETE(fieldList); + } + + void Document::add(Field& field) { + fieldList = _CLNEW DocumentFieldEnumeration::DocumentFieldList(&field, fieldList); + } + + void Document::setBoost(qreal boost) { + this->boost = boost; + } + + qreal Document::getBoost() const { + return boost; + } + + + Field* Document::getField(const TCHAR* name) const{ + CND_PRECONDITION(name != NULL, "name is NULL"); + + for (DocumentFieldEnumeration::DocumentFieldList* list = fieldList; list != NULL; list = list->next) + //cannot use interning here, because name is probably not interned + if ( _tcscmp(list->field->name(), name) == 0 ){ + return list->field; + } + + return NULL; + } + + const TCHAR* Document::get(const TCHAR* field) const { + CND_PRECONDITION(field != NULL, "field is NULL"); + Field *f = getField(field); + if (f!=NULL) + return f->stringValue(); //this returns null it is a binary(reader) + else + return NULL; + } + + DocumentFieldEnumeration* Document::fields() const { + return _CLNEW DocumentFieldEnumeration(fieldList); + } + + + TCHAR* Document::toString() const { + StringBuffer ret(_T("Document<")); + for (DocumentFieldEnumeration::DocumentFieldList* list = fieldList; list != NULL; list = list->next) { + TCHAR* tmp = list->field->toString(); + ret.append( tmp ); + if (list->next != NULL) + ret.append(_T(" ")); + _CLDELETE_ARRAY( tmp ); + } + ret.append(_T(">")); + return ret.toString(); + } + + + + void Document::removeField(const TCHAR* name) { + CND_PRECONDITION(name != NULL, "name is NULL"); + + DocumentFieldEnumeration::DocumentFieldList* previous = NULL; + DocumentFieldEnumeration::DocumentFieldList* current = fieldList; + while (current != NULL) { + //cannot use interning here, because name is probably not interned + if ( _tcscmp(current->field->name(),name) == 0 ){ + if (previous){ + previous->next = current->next; + }else + fieldList = current->next; + current->next=NULL; //ensure fieldlist destructor doesnt delete it + _CLDELETE(current); + return; + } + previous = current; + current = current->next; + } + } + + void Document::removeFields(const TCHAR* name) { + CND_PRECONDITION(name != NULL, "name is NULL"); + + DocumentFieldEnumeration::DocumentFieldList* previous = NULL; + DocumentFieldEnumeration::DocumentFieldList* current = fieldList; + while (current != NULL) { + //cannot use interning here, because name is probably not interned + if ( _tcscmp(current->field->name(),name) == 0 ){ + if (previous){ + previous->next = current->next; + }else + fieldList = current->next; + + current->next=NULL; //ensure fieldlist destructor doesnt delete it + _CLDELETE(current); + + if ( previous ) + current = previous->next; + else + current = fieldList; + }else{ + previous = current; + current = current->next; + } + } + } + + TCHAR** Document::getValues(const TCHAR* name) { + DocumentFieldEnumeration* it = fields(); + int32_t count = 0; + while ( it->hasMoreElements() ){ + Field* f = it->nextElement(); + //cannot use interning here, because name is probably not interned + if ( _tcscmp(f->name(),name) == 0 && f->stringValue() != NULL ) + count++; + } + _CLDELETE(it); + it = fields(); + + //todo: there must be a better way of doing this, we are doing two iterations of the fields + TCHAR** ret = NULL; + if ( count > 0 ){ + //start again + ret = _CL_NEWARRAY(TCHAR*,count+1); + int32_t i=0; + while ( it->hasMoreElements() ){ + Field* fld=it->nextElement(); + if ( _tcscmp(fld->name(),name)== 0 && fld->stringValue() != NULL ){ + ret[i] = stringDuplicate(fld->stringValue()); + i++; + } + } + ret[count]=NULL; + } + _CLDELETE(it); + return ret; + } +CL_NS_END |