public void deParse(Update update) {
buffer
.append("UPDATE ")
.append(PlainSelect.getStringList(update.getTables(), true, false))
.append(" SET ");
for (int i = 0; i < update.getColumns().size(); i++) {
Column column = update.getColumns().get(i);
buffer.append(column.getFullyQualifiedName()).append(" = ");
Expression expression = update.getExpressions().get(i);
expression.accept(expressionVisitor);
if (i < update.getColumns().size() - 1) {
buffer.append(", ");
}
}
if (update.getFromItem() != null) {
buffer.append(" FROM ").append(update.getFromItem());
if (update.getJoins() != null) {
for (Join join : update.getJoins()) {
if (join.isSimple()) {
buffer.append(", ").append(join);
} else {
buffer.append(" ").append(join);
}
}
}
}
if (update.getWhere() != null) {
buffer.append(" WHERE ");
update.getWhere().accept(expressionVisitor);
}
}
public Datum[] convertType(String[] singleTableElement) {
// Map tupleKeyValueMap = new HashMap();
String key = null, value = null, type = null;
Column col = null;
Datum[] t = new Datum[singleTableElement.length];
int i = 0;
int j = 0;
while (tableMap.size() != j
&& !tableMap
.get(j)
.getTable()
.toString()
.equalsIgnoreCase(tableName.getName().toString())) {
j++;
}
while (i < singleTableElement.length) {
col = tableMap.get(j);
value = singleTableElement[i];
type = tableColTypeMap.get(tableName.getName().toString().toLowerCase()).get(i).toLowerCase();
if (type.equalsIgnoreCase("int")) {
// tupleKeyValueMap.put(key, Integer.parseInt(value));
t[i] = new Datum.dLong(singleTableElement[i], new Column(tableName, col.getColumnName()));
// System.out.print(t[i].toComString());
} else if (type.equalsIgnoreCase("decimal")) {
// tupleKeyValueMap.put(key, Integer.parseInt(value));
t[i] =
new Datum.dDecimal(singleTableElement[i], new Column(tableName, col.getColumnName()));
// System.out.print(t[i].toComString());
} else if (type.equalsIgnoreCase("String")
|| type.startsWith("char")
|| type.startsWith("varchar")) {
// tupleKeyValueMap.put(key, value);
t[i] = new Datum.dString(singleTableElement[i], new Column(tableName, col.getColumnName()));
// System.out.print(t[i].toComString());
} else if (type.equalsIgnoreCase("date")) {
// tupleKeyValueMap.put(key, (new SimpleDateFormat(
// "YYYY-MM-DD", Locale.ENGLISH).parse(value)));
t[i] = new Datum.dDate(singleTableElement[i], new Column(tableName, col.getColumnName()));
// System.out.print(t[i].toComString());
} else {
try {
throw new Exception("Not aware of this data type :: " + type);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
i++;
j++;
}
return t;
}
@Override
public void visit(Column column) {
// extract type for the column
String tableSchemaName = _tan.getSchemaName(ParserUtil.getComponentName(column.getTable()));
String columnName = column.getColumnName();
TypeConversion tc = _schema.getType(tableSchemaName, columnName);
// extract the position (index) of the required column
int position =
HierarchyExtractor.extractComponentIndex(
column, _affectedComponent, _queryPlan, _schema, _tan);
ValueExpression ve = new ColumnReference(tc, position);
_exprStack.push(ve);
}
@Override
public void visit(Column column) {
Table affectedTable = column.getTable();
if (_sideTable == null) {
_sideTable = affectedTable;
} else {
if (!ParserUtil.equals(_sideTable, affectedTable)) {
throw new RuntimeException(
"Multiple tables on one side of a join condition is not supported yet!");
}
}
}
public void visit(Column tableColumn) throws Exception {
if (tableColumn.getTable() != null) {
tableColumn.getTable().accept(this);
}
}
@Override
public void visit(Column column) {
columnName = StringUtils.strip(column.getColumnName(), "`").toUpperCase();
}
