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package org.glassfish.admin.rest.readers;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Iterator;
import java.util.Map;
import org.glassfish.admin.rest.provider.ProviderUtil;
/**
* @author rajeshwar patil
*/
public abstract class InputObject extends ProviderUtil {
/**
* Get the map of key-value pairs represented by this object.
*
* @return The map of key-value pairs.
*/
public abstract Map initializeMap() throws InputException;
/**
* Get the value object associated with a key.
*
* @param key A key string.
* @return The object associated with the key.
* @throws InputException if the key is not found.
*/
public Object get(String key) throws InputException {
Object o = getValue(key);
if (o == null) {
throw new InputException("InputObject[" + quote(key) + "] not found.");
}
return o;
}
/**
* Get the boolean value associated with a key.
*
* @param key A key string.
* @return The boolean value associated with the key.
* @throws InputException
* if the value is not a Boolean or the String "true" or "false".
*/
public boolean getBoolean(String key) throws InputException {
Object o = getValue(key);
if (o.equals(Boolean.FALSE) ||
(o instanceof String &&
((String)o).equalsIgnoreCase("false"))) {
return false;
} else if (o.equals(Boolean.TRUE) ||
(o instanceof String &&
((String)o).equalsIgnoreCase("true"))) {
return true;
}
throw new InputException("InputObject[" + quote(key) +
"] is not a Boolean.");
}
/**
* Get the double value associated with a key.
* @param key A key string.
* @return The numeric value.
* @throws InputException if the key is not found or
* if the value is not a Number object and cannot be converted to a number.
*/
public double getDouble(String key) throws InputException {
Object o = getValue(key);
try {
return o instanceof Number ?
((Number)o).doubleValue() :
Double.valueOf((String)o).doubleValue();
} catch (Exception e) {
throw new InputException("InputObject[" + quote(key) +
"] is not a number.");
}
}
/**
* Get the int value associated with a key. If the number value is too
* large for an int, it will be clipped.
*
* @param key A key string.
* @return The integer value.
* @throws InputException if the key is not found or if the value cannot
* be converted to an integer.
*/
public int getInt(String key) throws InputException {
Object o = getValue(key);
return o instanceof Number ?
((Number)o).intValue() : (int)getDouble(key);
}
/**
* Get the long value associated with a key. If the number value is too
* long for a long, it will be clipped.
*
* @param key A key string.
* @return The long value.
* @throws InputException if the key is not found or if the value cannot
* be converted to a long.
*/
public long getLong(String key) throws InputException {
Object o = getValue(key);
return o instanceof Number ?
((Number)o).longValue() : (long)getDouble(key);
}
/**
* Get value associated with a key.
* @param key A key string.
* @return An object which is the value, or null if there is no value.
*/
private Object getValue(String key) {
return key == null ? null : map.get(key);
}
/**
* Get the string associated with a key.
*
* @param key A key string.
* @return A string which is the value.
* @throws InputException if the key is not found.
*/
public String getString(String key) throws InputException {
return get(key).toString();
}
/**
* Determine if the InputObject contains a specific key.
* @param key A key string.
* @return true if the key exists in the InputObject.
*/
public boolean has(String key) {
return map.containsKey(key);
}
/**
* Determine if the value associated with the key is null or if there is
* no value.
* @param key A key string.
* @return true if there is no value associated with the key or if
* the value is null.
*/
public boolean isNull(String key) {
Object value = getValue(key);
if (value == null) return true;
return false;
}
/**
* Get an enumeration of the keys of the InputObject.
*
* @return An iterator of the keys.
*/
public Iterator keys() {
return map.keySet().iterator();
}
/**
* Get the number of keys stored in the InputObject.
*
* @return The number of keys in the InputObject.
*/
public int length() {
return map.size();
}
/*static protected final String readAsString(InputStream in) throws IOException {
Reader reader = new InputStreamReader(in);
StringBuilder sb = new StringBuilder();
char[] c = new char[1024];
int l;
while ((l = reader.read(c)) != -1) {
sb.append(c, 0, l);
}
return sb.toString();
}*/
/**
* Try to convert a string into a number, boolean, or null. If the string
* can't be converted, return the string.
* @param s A String.
* @return A simple JSON value.
*/
static public Object stringToValue(String s) {
if (s.equals("")) {
return s;
}
if (s.equalsIgnoreCase("true")) {
return Boolean.TRUE;
}
if (s.equalsIgnoreCase("false")) {
return Boolean.FALSE;
}
if (s.equalsIgnoreCase("null")) {
return null;
}
/*
* If it might be a number, try converting it. We support the 0- and 0x-
* conventions. If a number cannot be produced, then the value will just
* be a string. Note that the 0-, 0x-, plus, and implied string
* conventions are non-standard. A JSON parser is free to accept
* non-JSON forms as long as it accepts all correct JSON forms.
*/
char b = s.charAt(0);
if ((b >= '0' && b <= '9') || b == '.' || b == '-' || b == '+') {
if (b == '0') {
if (s.length() > 2 &&
(s.charAt(1) == 'x' || s.charAt(1) == 'X')) {
try {
return Integer.parseInt(s.substring(2),16);
} catch (Exception e) {
/* Ignore the error */
}
} else {
try {
return Integer.parseInt(s, 8);
} catch (Exception e) {
/* Ignore the error */
}
}
}
try {
if (s.indexOf('.') > -1 || s.indexOf('e') > -1 || s.indexOf('E') > -1) {
return Double.valueOf(s);
} else {
Long myLong = new Long(s);
if (myLong.longValue() == myLong.intValue()) {
return myLong.intValue();
} else {
return myLong;
}
}
} catch (Exception f) {
/* Ignore the error */
}
}
return s;
}
/**
* Put a key/value pair in this object, but only if the key and the
* value are both non-null, and only if there is not already a member
* with that name. If the value is null, then the key will be removed
* from this object if it is present.
* @param key
* @param value. It should be of one of these types: Boolean, Double,
* Integer, Long, String, or null.
* @return this.
* @throws InputException if the key is a duplicate
*/
public InputObject put(String key, Object value) throws InputException {
if (key != null && value != null) {
if (this.map.get(key) != null) {
throw new InputException("Duplicate key \"" + key + "\"");
}
verify(value);
this.map.put(key, value);
}
if (value == null) {
this.map.remove(key);
}
return this;
}
public InputObject putMap(String key, Map value) {
// This method is called in case of xml input
//We can safely ignor key input value - we know the object we are modifying
//from the input url.
//We do not need to check for duplicate enteries - put/post of a resource
//modifies only the resource and not any of its child resources.
//Duplicate entries are possible when we have same attribute on a resource
//and its child/children
this.map.putAll(value);
return this;
}
/**
* Throw an exception if the object is an NaN or infinite number.
* @param o The object to verify.
* @throws InputException If o is a non-finite number.
*/
static void verify(Object o) throws InputException {
if (o != null) {
if (o instanceof Double) {
if (((Double)o).isInfinite() || ((Double)o).isNaN()) {
throw new InputException(
"Non-finite numbers not allowed");
}
} else if (o instanceof Float) {
if (((Float)o).isInfinite() || ((Float)o).isNaN()) {
throw new InputException(
"Non-finite numbers not allowed");
}
}
}
}
protected Map map;
}