/*

Copyright (c) 2003, Confident Outsourcing
All rights reserved.

Redistribution and use in source and binary forms, with or without 
modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, 
this list of conditions and the following disclaimer. 

Redistributions in binary form must reproduce the above copyright notice, 
this list of conditions and the following disclaimer in the documentation 
and/or other materials provided with the distribution. 

Neither the name of the Confident Outsourcing nor the names of its 
contributors may be used to endorse or promote products derived from 
this software without specific prior written permission. 

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 
OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/
#include "tocci/tocci.h"

using namespace oracle::occi;

#define OASSERT(x) if ((x)!=OCI_SUCCESS && (x)!=OCI_SUCCESS_WITH_INFO) throw(*new SQLException(errhp));

Statement::Statement(Connection *con,const char *q)
	: envhp(con->getEnvironment()->getOCIEnviroment()),
	errhp(con->getEnvironment()->getOCIError()),
	svchp(con->getOCIServiceContext()),
	query(q),autoCommit(false) {

	int r=0;
	r=OCIHandleAlloc(envhp, (void **)&stmt, OCI_HTYPE_STMT, (CONST size_t) 0, (dvoid **) 0);

	if (r!=OCI_SUCCESS && r!=OCI_SUCCESS_WITH_INFO) throw(*new SQLException(errhp));
	r=OCIStmtPrepare (stmt, errhp,
		(unsigned char *)query.c_str(), query.length(), OCI_NTV_SYNTAX, OCI_DEFAULT);
	if (r!=OCI_SUCCESS && r!=OCI_SUCCESS_WITH_INFO) {
		throw(*new SQLException(errhp));
	}
}

Statement::~Statement() {
	OCIHandleFree((void **)stmt, OCI_HTYPE_STMT);
}


void Statement::setPrefetchRowCount(int pfc) {
  if (OCIAttrSet (stmt,
                  OCI_HTYPE_STMT,
                  &pfc, 
                  0,
                  OCI_ATTR_PREFETCH_ROWS,
                  errhp)) throw(*new SQLException(errhp));
}

void Statement::registerOutParam(int pos, int type) {
	int r;
	if (pos>=MAX_BINDS) throw(SQLException(3, "Cannot bind such index (too big)" ));
	var[pos].type=type;
	switch(type) {
	case OCCIUNSIGNED_INT:
		var[pos].data_len=sizeof(unsigned int);
		var[pos].data=realloc(var[pos].data, var[pos].data_len);
		break;
	case OCCICURSOR:
		var[pos].data_len=0;
		var[pos].data=realloc(var[pos].data, sizeof(OCIStmt *));
		*((OCIStmt **)var[pos].data)=NULL;
		r=OCIHandleAlloc(envhp, (void **)var[pos].data, OCI_HTYPE_STMT, (CONST size_t) 0, (dvoid **) 0);
		OASSERT(r);
		break;

	default: throw(SQLException(4, "Unknown type. TOCCI doesnt support this type of OUT parameter"));
	}
}

int Statement::executeUpdate() {  
	ResultSet *rs=executeQuery();
	closeResultSet(rs);
	return 0;
}


ResultSet *Statement::executeQuery() {
	int i, r;
	char bname[8];
	ub2 type;

	int iter;//must be zero only for select ! OCI_ATTR_STMT_TYPE OCI_STMT_SELECT
	r=OCIAttrGet(stmt, OCI_HTYPE_STMT, &type, 0, OCI_ATTR_STMT_TYPE, errhp);
	OASSERT(r);
	iter=(type==OCI_STMT_SELECT)?0:1;

	for(i=1; i<MAX_BINDS; i++) if (var[i].data_len!=-1) {
//		printf("Bind var: %d\n", i);
		sprintf(bname, ":v%d", i);
		r=OCIBindByName(stmt, &var[i].bindhp, errhp, (unsigned char *)bname, strlen(bname), 
			var[i].data, var[i].data_len, var[i].type, 
			NULL, NULL, NULL, 0, NULL, OCI_DEFAULT);
		OASSERT(r);

		if (var[i].type==SQLT_NTY || var[i].type==SQLT_NCO) {
			//indpp=NULL;
			r=OCIBindObject(var[i].bindhp, errhp, var[i].oci_type, 
				(void**)var[i].data, NULL, NULL, NULL);
			OASSERT(r);
		}
	}

	r=OCIStmtExecute(svchp, stmt, errhp, iter, 0, NULL, NULL, (autoCommit)?OCI_COMMIT_ON_SUCCESS:OCI_DEFAULT);
	OASSERT(r);
	return (type==OCI_STMT_SELECT)?new ResultSet(stmt, errhp):new ResultSet();
}

unsigned int Statement::getUInt(int pos) {
	if (var[pos].data_len==-1) throw(*new SQLException(10, "You havent bind that index"));
	return *((unsigned int*)var[pos].data);
}

void Statement::setUInt(int pos, unsigned int val) {
	var[pos].type=OCCIUNSIGNED_INT;
	var[pos].data=realloc(var[pos].data, sizeof(val));
	memcpy(var[pos].data, &val, sizeof(val));
	var[pos].data_len=sizeof(val);
}

void Statement::setString(int pos, const string &str) {
	var[pos].type=SQLT_STR;
	//var[pos].data=(void*)strdup(str.c_str());
	var[pos].data=realloc(var[pos].data, str.length()+1);
	strcpy((char*)var[pos].data, str.c_str());
	var[pos].data_len=str.length()+1;
}

ResultSet * Statement::getCursor(int pos) {
	OCIStmt *st=*((OCIStmt **)var[pos].data);
	return new ResultSet(st, errhp);
}

bool Statement::getAutoCommit() const {
	return autoCommit;
}

void Statement::setAutoCommit(bool ac) {
	autoCommit=ac;
}


void Statement::closeResultSet(ResultSet *rs) {delete rs;}


void Statement::setVector(int pos, const vector<PObject*> &v, const char *type) {
	int r;

	OCIType *t;
	OCIType *coll_type;
	OCIColl **coll;
	void *obj_inst;

	var[pos].type=SQLT_NTY;
	var[pos].data_len=sizeof(OCIColl*);
	var[pos].data=realloc(var[pos].data, sizeof(OCIColl*));
	coll=(OCIColl**)var[pos].data;

	r=OCITypeByName(envhp, errhp, svchp, 
			NULL, -1, (unsigned char*)type, strlen(type), 
			NULL, -1, OCI_DURATION_SESSION, OCI_TYPEGET_HEADER, &coll_type);
	OASSERT(r);
	r=OCIObjectNew(envhp, errhp, svchp, OCI_TYPECODE_NAMEDCOLLECTION, coll_type, 
		NULL, OCI_DURATION_SESSION, TRUE, (dvoid**)coll);
	OASSERT(r);
	var[pos].oci_type=coll_type;

	for (vector<PObject*>::const_iterator i=v.begin(); i!=v.end(); i++) {
		PObject * obj=(*i);
		r=OCITypeByName(envhp, errhp, svchp, 
			NULL, -1, (unsigned char*)obj->getSQLTypeName().c_str(), obj->getSQLTypeName().length(), 
			NULL, -1, OCI_DURATION_SESSION, OCI_TYPEGET_HEADER, &t);
		OASSERT(r);
		r=OCIObjectNew(envhp, errhp, svchp, SQLT_NTY, t, NULL, OCI_DURATION_SESSION, TRUE, (dvoid**)&obj_inst);
		OASSERT(r);
		/*
		OBJECT ATTR SET !
		*/

		vector<AnyDataElement> obj_meta;
		AnyData obj_data(&obj_meta);
		obj->writeSQL(obj_data);
		for(vector<AnyDataElement>::iterator ae=obj_meta.begin(); ae!=obj_meta.end(); ae++) {
			AnyDataElement e=(*ae);

			text *names[1];
			ub4 lengths[1];
			
			names[0]=(text*)e.name.c_str();
			lengths[0]=e.name.length();
			OCINumber val;
			r=OCINumberFromInt(errhp, &e.value, sizeof(e.value), OCI_NUMBER_SIGNED, &val);
			OASSERT(r);

			r=OCIObjectSetAttr(envhp, errhp, obj_inst, NULL, t, (text**)names, lengths, 1, 0, 0, NULL, NULL, &val);
			OASSERT(r);
		}

		r=OCICollAppend(envhp, errhp, obj_inst, NULL, *coll);
		OASSERT(r);
	}

//	memcpy(var[pos].data, &coll, sizeof(coll));
}
/*	string sum(type);
	string sql;
	AnyData  data(&sql);
	var[pos].data=strdup("\"TAB_KEYWORDS\"()");
	var[pos].type=SQLT_STR;
	var[pos].data_len=0;

	sum.append("(");

	for (vector<PObject*>::const_iterator i=v.begin(); i!=v.end(); i++) {
		sql="KEYWORD(";
		PObject * obj=(*i);
		obj->writeSQL(data);
		sql.resize(sql.length()-2);
		sql.append(")");

		sum.append(sql);
		sum.append("  ");
	}
	sum.resize(sum.length()-2);
	sum.append(" )");
	//printf("%s", sum.c_str());
	var[pos].data=strdup(sum.c_str());
	var[pos].data_len=sum.length()+1;
	var[pos].type=SQLT_STR;
*/
/*		
		text *names[4];
		ub4 lengths[4];

		names[0]=(text*)"WORD_ID";
		lengths[0]=strlen((char*)names[0]);
		names[1]=(text*)"CASE_MASK";
		lengths[1]=strlen((char*)names[1]);
		names[2]=(text*)"TYPE";
		lengths[2]=strlen((char*)names[2]);
		names[3]=(text*)"LENGTH";
		lengths[3]=strlen((char*)names[3]);
		text * val=(text*)"1";

		r=OCIObjectSetAttr(envhp, errhp, ref, NULL, t, (text**)names, lengths, 
			4, 0, 0,	NULL, NULL, val);
		OASSERT(r);
*/
/*
		keyword_t k;
		int c=10;
		r=OCINumberFromInt(errhp, &c, sizeof(c), OCI_NUMBER_SIGNED, &k.a);
		OASSERT(r);
		c=1;
		r=OCINumberFromInt(errhp, &c, sizeof(c), OCI_NUMBER_SIGNED, &k.b);
		OASSERT(r);
		c=0;
		r=OCINumberFromInt(errhp, &c, sizeof(c), OCI_NUMBER_SIGNED, &k.c);
		OASSERT(r);
		r=OCINumberFromInt(errhp, &c, sizeof(c), OCI_NUMBER_SIGNED, &k.d);
		OASSERT(r);
*/