/**
* ********************************************************************* Implementation of a
* standard <code>toString()</code> method. This method returns a <code>String</code>
* representation of the node as a human-readable SQL <code>INSERT</code>.
*
* <p>This method is responsible for constructing the SQL Query represented by the <code>
* InsertNode</code> in a well-formed way so that it can be presented to a <code>Connection</code>
* and executed properly.
*
* @return The <code>String</code> representation of the SQL <code>INSERT</code>.
*/
public String toString() {
String s = "";
InsertNode insert = new InsertNode();
InsertNode values = new InsertNode();
for (InsertNode node : this) {
if (node.getType().equalsIgnoreCase("insert")) {
insert.addNode(node);
} else if (node.getType().equalsIgnoreCase("values")) {
values.addNode(node);
} else {
// We have a problem
}
}
s = String.format("%s\n%s;", constructInsertClause(insert), constructValuesClause(values));
return s;
}
public static void main(String[] args) {
// try {
// JSONObject json = new JSONObject("{ 'type' : 'INSERT', " +
// "'table' : 'test_bobby.User', " +
// "'insert' : [" +
// "{'attribute' : 'LastName', 'value' : 'Neelands'}," +
// "{'attribute' : 'FirstName', 'value' : 'Andrew'}," +
// "{'attribute' : 'UserType', 'value' : 'student'}," +
// "{'attribute' : 'CreateTime', 'value' : '2013-01-25 19:27:00'}" +
// "]" +
// "}");
// System.out.println(json.toString(3));
// InsertNode insert = new InsertNode(json);
//
// System.out.println(insert.toString());
//
// insert.execute();
// } catch (JSONException e) {
// // TODO Auto-generated catch block
// e.printStackTrace();
// }
String j =
"{'type':'INSERT','table':'User','insert':[{'attribute':'FirstName','value':'Test'},{'attribute':'LastName','value':'Tester'},{'attribute':'EmailAddress','value':'*****@*****.**'},{'attribute':'UserType','value':'student'},{'attribute':'CreateTime','value':'2013-3-3 9:5:26'}]}";
JSONObject json = null;
try {
json = new JSONObject(j);
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
InsertNode insert = new InsertNode(json);
System.out.println(insert.toString());
insert.execute();
// insert.addNode("INSERT", "User (LastName, FirstName, EmailAddress, UserType, CreateTime)");
// insert.addNode("VALUES", "('Tester', 'Test', '*****@*****.**', 'student', '2013-02-11
// 00:56:23')");
// Hashtable<String,String> ht = new Hashtable<String,String>();
// ht.put("LastName", "Tester");
// ht.put("FirstName", "Test");
// ht.put("EmailAddress", "*****@*****.**");
// ht.put("UserType", "student");
// ht.put("CreateTime", "2013-02-11 00:56:23");
// insert.addNode("INSERT", "User", ht);
// insert.addNode("INSERT", "User (LastName, FirstName, EmailAddress, UserType, CreateTime)");
// insert.addNode("VALUES", new String[]{"Tester", "Test", "*****@*****.**", "student",
// "2013-02-11 00:56:23"});
//
// System.out.print("{");
// for(int i = 0; i < insert.getNode(0).getCols().length; i++) {
// System.out.print(String.format("%s=%s", insert.getNode(0).getCols()[i],
// insert.getNode(1).getValues()[i]));
// if(i < (insert.getNode(0).getCols().length-1)) {
// System.out.print(", ");
// }
// }
// System.out.println("}");
// System.out.println(insert.getPairs().toString());
//
// Iterator<Map.Entry<String, String>> iter = insert.getPairs().entrySet().iterator();
// while(iter.hasNext()) {
// Map.Entry<String, String> entry = iter.next();
// System.out.printf("%s = %s\n", entry.getKey(), entry.getValue());
// }
//
// System.out.println("TABLE = " + insert.table);
//
// ResultNode result = insert.execute();
// System.out.println(result.getNode(0).getNodeWithAttr("UserID").getValue());
// Hashtable<String, String> ht = new Hashtable<String,String>();
// ht.put("FirstName", "Andrew");
// ht.put("LastName", "Neelands");
// ht.put("EmailAddress", "*****@*****.**");
// ht.put("UserType", "student");
//
// InsertNode insert = new InsertNode();
// insert.addNode("INSERT", "test_bobby.User", ht);
// System.out.println(insert.toString());
// ResultNode result = insert.execute();
//
// System.out.println(result);
System.exit(1);
}
/**
* ********************************************************************* Takes an <code>InsertNode
* </code> full of only <code>values</code> type, and constructs a SQL <code>VALUES</code> clause
* as a <code>String</code>.
*
* @param values - a <code>InsertNode</code> of nodes of only <code>values</code> type.
* @return a <code>String</code> formatted as a SQL <code>VALUES</code> clause.
*/
private static String constructValuesClause(InsertNode values) {
values = values.getNode(0);
String clause = "VALUES " + values.getExpression();
return clause;
}
/**
* ********************************************************************* Takes an <code>InsertNode
* </code> full of only <code>insert</code> type, and constructs a SQL <code>INSERT</code> clause
* as a <code>String</code>.
*
* @param insert - a <code>InsertNode</code> of nodes of only <code>insert</code> type.
* @return a <code>String</code> formatted as a SQL <code>INSERT</code> clause.
*/
private static String constructInsertClause(InsertNode insert) {
Hashtable<String, String> props = ConnectionProperties.getProperties();
insert = insert.getNode(0);
String clause = "INSERT INTO " + props.get("dbname") + "." + insert.getExpression();
return clause;
}
