public String selectColumnfromTable(String DBname, String tableName, String[] columnName)
throws ParserConfigurationException, SAXException, IOException {
count = 0;
if (!checkDB(DBname)) {
MyLogger.Log().error(DBMS.DB_NOT_FOUND);
return DBMS.DB_NOT_FOUND;
}
if (!checkTable(DBname, tableName)) {
MyLogger.Log().error(DBMS.TABLE_NOT_FOUND);
return DBMS.TABLE_NOT_FOUND;
}
if (!justcheckcolumn(DBname, tableName, columnName)) {
MyLogger.Log().error(DBMS.COLUMN_NOT_FOUND);
return DBMS.COLUMN_NOT_FOUND;
}
String dir = DBMS_Directory + "\\DB " + DBname + "\\" + tableName + ".xml";
Document doc = Load(dir);
doc.getDocumentElement().normalize();
int numOfColumns = columnName.length;
ArrayList<String> cn = new ArrayList<String>();
for (int i = 0; i < columnName.length; i++) {
cn.add(columnName[i]);
}
String values = "";
int countValues = 0;
NodeList nl = doc.getElementsByTagName(tableName);
NodeList n = nl.item(0).getChildNodes();
for (int i = 0; i < n.getLength(); i++) {
NodeList rows = n.item(i).getChildNodes();
for (int j = 0; j < rows.getLength(); j++) {
if (cn.contains(rows.item(j).getNodeName())) {
countValues++;
if (numOfColumns == countValues) {
values = values + rows.item(j).getChildNodes().item(0).getNodeValue();
} else {
values = values + rows.item(j).getChildNodes().item(0).getNodeValue() + " ";
}
}
}
if (numOfColumns == countValues) {
values += "\n";
count++;
countValues = 0;
}
}
if (values == "") {
MyLogger.Log().error(DBMS.NOT_MATCH_CRITERIA);
return DBMS.NOT_MATCH_CRITERIA;
}
values = values.substring(0, values.length() - 1);
LastRow = maxRownumber(DBname, tableName);
return values;
}
public String selectAllTable(String DBname, String tableName)
throws ParserConfigurationException, SAXException, IOException {
if (!checkDB(DBname)) {
MyLogger.Log().error(DBMS.DB_NOT_FOUND);
return DBMS.DB_NOT_FOUND;
}
if (!checkTable(DBname, tableName)) {
MyLogger.Log().error(DBMS.TABLE_NOT_FOUND);
return DBMS.TABLE_NOT_FOUND;
}
String dir = DBMS_Directory + "\\DB " + DBname + "\\" + tableName + ".xml";
Document doc = Load(dir);
doc.getDocumentElement().normalize();
NodeList nodeList = doc.getElementsByTagName("*");
String columns = "";
int numOfColumns = 0;
for (int i = 1; i < nodeList.getLength(); i++) {
Element fileElement = (Element) nodeList.item(i);
if (!fileElement.getNodeName().toString().contains("ROW_NUM")
&& !columns.contains(fileElement.getNodeName().toString())) {
columns = columns + fileElement.getNodeName() + " ";
numOfColumns++;
}
}
String values = "";
int countValues = 0;
NodeList nl = doc.getElementsByTagName(tableName);
NodeList n = nl.item(0).getChildNodes();
for (int i = 0; i < n.getLength(); i++) {
NodeList rows = n.item(i).getChildNodes();
for (int j = 0; j < rows.getLength(); j++) {
countValues++;
if (numOfColumns == countValues) {
values = values + rows.item(j).getChildNodes().item(0).getNodeValue();
} else {
values = values + rows.item(j).getChildNodes().item(0).getNodeValue() + " ";
}
}
if (numOfColumns == countValues) {
values += "\n";
countValues = 0;
}
}
if (values == "") {
MyLogger.Log().error(DBMS.NOT_MATCH_CRITERIA);
return DBMS.NOT_MATCH_CRITERIA;
}
values = values.substring(0, values.length() - 1);
LastRow = maxRownumber(DBname, tableName);
MyLogger.Log().info(DBMS.Con_Select);
return values;
}
public String selectRowFromColumn(
String DBname,
String tableName,
String[] columnNames,
String condition,
String conditionValue,
String valuetype,
int comp)
throws ParserConfigurationException, SAXException, IOException {
count = 0;
if (!checkDB(DBname)) {
MyLogger.Log().error(DBMS.DB_NOT_FOUND);
return DBMS.DB_NOT_FOUND;
}
if (!checkTable(DBname, tableName)) {
MyLogger.Log().error(DBMS.TABLE_NOT_FOUND);
return DBMS.TABLE_NOT_FOUND;
}
if (!justcheckcolumn(DBname, tableName, columnNames)) {
MyLogger.Log().error(DBMS.COLUMN_NOT_FOUND);
return DBMS.COLUMN_NOT_FOUND;
}
String[] rr = new String[1];
rr[0] = valuetype.toLowerCase();
String[] r = new String[1];
r[0] = condition.toLowerCase();
String temp = checkcolumn(DBname, tableName, r, rr);
if (!temp.equals("good")) {
MyLogger.Log().error(temp);
return temp;
}
String dir = DBMS_Directory + "\\DB " + DBname + "\\" + tableName + ".xml";
Document doc = Load(dir);
doc.getDocumentElement().normalize();
ArrayList<String> cn = new ArrayList<String>();
for (int i = 0; i < columnNames.length && !columnNames[i].equals(""); i++) {
cn.add(columnNames[i].toLowerCase());
}
String values = "";
NodeList nl = doc.getElementsByTagName(tableName);
NodeList n = nl.item(0).getChildNodes();
boolean print = false;
for (int i = 0; i < n.getLength(); i++) {
NodeList rows = n.item(i).getChildNodes();
for (int j = 0; j < rows.getLength(); j++) {
String x = rows.item(j).getChildNodes().item(0).getNodeValue();
switch (comp) {
case 0:
if (rows.item(j).getNodeName().equals(condition.toLowerCase())
&& x.equals(conditionValue)) {
for (int k = 0; k < rows.getLength(); k++) {
if (cn.contains(rows.item(k).getNodeName())) {
values += rows.item(k).getChildNodes().item(0).getNodeValue() + '\n';
count++;
if (rows.item(j).getParentNode().getNodeName().contains("ROW_NUM")) {
String s = rows.item(j).getParentNode().getNodeName().toString();
s = s.replaceAll("\\D+", "");
LastRow = Integer.parseInt(s);
}
}
}
}
break;
case 1:
if (rows.item(j).getNodeName().equals(condition.toLowerCase())
&& cn.contains(condition.toLowerCase())) {
double a = Double.parseDouble(rows.item(j).getChildNodes().item(0).getNodeValue());
double b = Double.parseDouble(condition);
if (a > b) {
print = true;
count++;
if (rows.item(j).getParentNode().getNodeName().contains("ROW_NUM")) {
String s = rows.item(j).getParentNode().getNodeName().toString();
s = s.replaceAll("\\D+", "");
LastRow = Integer.parseInt(s);
}
}
}
break;
case -1:
if (cn.contains(condition.toLowerCase())
&& rows.item(j).getNodeName().equals(condition.toLowerCase())) {
double a = Double.parseDouble(rows.item(j).getChildNodes().item(0).getNodeValue());
double b = Double.parseDouble(condition);
if (a < b) {
count++;
print = true;
if (rows.item(j).getParentNode().getNodeName().contains("ROW_NUM")) {
String s = rows.item(j).getParentNode().getNodeName().toString();
s = s.replaceAll("\\D+", "");
LastRow = Integer.parseInt(s);
}
}
}
break;
default:
break;
}
if (print == true) {
for (int k = 0; k < rows.getLength(); k++) {
if (cn.contains(rows.item(k).getNodeName())) {
values += rows.item(k).getChildNodes().item(0).getNodeValue() + '\n';
}
}
}
print = false;
}
}
if (values.length() == 0) {
MyLogger.Log().error(DBMS.NOT_MATCH_CRITERIA);
return DBMS.NOT_MATCH_CRITERIA;
}
values = values.substring(0, values.length() - 1);
MyLogger.Log().info(DBMS.Con_Select);
return values;
}
public String selectrow(
String DBname,
String tableName,
String columnNames,
String condition,
String valuetype,
int comp)
throws ParserConfigurationException, SAXException, IOException {
count = 0;
if (!checkDB(DBname)) {
MyLogger.Log().equals(DBMS.DB_NOT_FOUND);
return DBMS.DB_NOT_FOUND;
}
if (!checkTable(DBname, tableName)) {
MyLogger.Log().error(DBMS.TABLE_NOT_FOUND);
return DBMS.TABLE_NOT_FOUND;
}
String[] r = new String[1];
r[0] = columnNames;
String[] rr = new String[1];
rr[0] = valuetype;
if (!checkcolumn(DBname, tableName, r, rr).equals("good")) {
return checkcolumn(DBname, tableName, r, rr);
}
String dir = DBMS_Directory + "\\DB " + DBname + "\\" + tableName + ".xml";
Document doc = Load(dir);
doc.getDocumentElement().normalize();
NodeList nodeList = doc.getElementsByTagName("*");
String columns = "";
int numOfColumns = 0;
for (int i = 1; i < nodeList.getLength(); i++) {
Element fileElement = (Element) nodeList.item(i);
if (!fileElement.getNodeName().toString().contains("ROW_NUM")
&& !columns.contains(fileElement.getNodeName().toString())) {
columns = columns + fileElement.getNodeName() + "\t";
numOfColumns++;
}
}
String values = "";
String rowValue = "";
int countValues = 0;
NodeList nl = doc.getElementsByTagName(tableName);
NodeList n = nl.item(0).getChildNodes();
boolean print = false;
for (int i = 0; i < n.getLength(); i++) {
NodeList rows = n.item(i).getChildNodes();
for (int j = 0; j < rows.getLength(); j++) {
String x = rows.item(j).getChildNodes().item(0).getNodeValue();
switch (comp) {
case 0:
if (rows.item(j).getNodeName().equals(columnNames) && x.equals(condition)) {
print = true;
count++;
if (rows.item(j).getParentNode().getNodeName().contains("ROW_NUM")) {
String s = rows.item(j).getParentNode().getNodeName().toString();
s = s.replaceAll("\\D+", "");
LastRow = Integer.parseInt(s);
}
}
break;
case 1:
if (rows.item(j).getNodeName().equals(columnNames)) {
double a = Double.parseDouble(rows.item(j).getChildNodes().item(0).getNodeValue());
double b = Double.parseDouble(condition);
if (a > b) {
count++;
print = true;
if (rows.item(j).getParentNode().getNodeName().contains("ROW_NUM")) {
String s = rows.item(j).getParentNode().getNodeName().toString();
s = s.replaceAll("\\D+", "");
LastRow = Integer.parseInt(s);
}
}
}
break;
case -1:
if (rows.item(j).getNodeName() == columnNames) {
double a = Double.parseDouble(rows.item(j).getChildNodes().item(0).getNodeValue());
double b = Double.parseDouble(condition);
if (a < b) {
count++;
print = true;
if (rows.item(j).getParentNode().getNodeName().contains("ROW_NUM")) {
String s = rows.item(j).getParentNode().getNodeName().toString();
s = s.replaceAll("\\D+", "");
LastRow = Integer.parseInt(s);
}
}
}
break;
default:
break;
}
countValues++;
if (numOfColumns == countValues) {
rowValue = rowValue + rows.item(j).getChildNodes().item(0).getNodeValue();
} else {
rowValue = rowValue + rows.item(j).getChildNodes().item(0).getNodeValue() + " ";
}
}
if (print) values += rowValue;
rowValue = "";
if (numOfColumns == countValues && print) {
values += "\n";
}
print = false;
countValues = 0;
}
if (values == "") {
MyLogger.Log().error(DBMS.NOT_MATCH_CRITERIA);
return DBMS.NOT_MATCH_CRITERIA;
}
values = values.substring(0, values.length() - 1);
MyLogger.Log().info(DBMS.Con_Select);
return values;
}