Merge pull request #617 from johnjaylward/issue-616-similar-bug

Fixes #616 similar() problem comparing double vs BigDecimal

src/main/java/org/json/JSONObject.java

@@ -1159,6 +1159,18 @@ public class JSONObject {
      *          to convert.
      */
     static BigDecimal objectToBigDecimal(Object val, BigDecimal defaultValue) {
+        return objectToBigDecimal(val, defaultValue, true);
+    }
+    
+    /**
+     * @param val value to convert
+     * @param defaultValue default value to return is the conversion doesn't work or is null.
+     * @param exact When <code>true</code>, then {@link Double} and {@link Float} values will be converted exactly.
+     *      When <code>false</code>, they will be converted to {@link String} values before converting to {@link BigDecimal}.
+     * @return BigDecimal conversion of the original value, or the defaultValue if unable
+     *          to convert.
+     */
+    static BigDecimal objectToBigDecimal(Object val, BigDecimal defaultValue, boolean exact) {
         if (NULL.equals(val)) {
             return defaultValue;
         }
@@ -1172,7 +1184,14 @@ public class JSONObject {
             if (!numberIsFinite((Number)val)) {
                 return defaultValue;
             }
+            if (exact) {
                 return new BigDecimal(((Number)val).doubleValue());
+            }else {
+                // use the string constructor so that we maintain "nice" values for doubles and floats
+                // the double constructor will translate doubles to "exact" values instead of the likely
+                // intended representation
+                return new BigDecimal(val.toString());
+            }
         }
         if (val instanceof Long || val instanceof Integer
                 || val instanceof Short || val instanceof Byte){
@@ -1639,9 +1658,6 @@ public class JSONObject {
      * implementations and interfaces has the annotation. Returns the depth of the
      * annotation in the hierarchy.
      *
-     * @param <A>
-     *            type of the annotation
-     *
      * @param m
      *            method to check
      * @param annotationClass
@@ -2135,8 +2151,8 @@ public class JSONObject {
         // BigDecimal should be able to handle all of our number types that we support through
         // documentation. Convert to BigDecimal first, then use the Compare method to
         // decide equality.
-        final BigDecimal lBigDecimal = objectToBigDecimal(l, null);
+        final BigDecimal lBigDecimal = objectToBigDecimal(l, null, false);
-        final BigDecimal rBigDecimal = objectToBigDecimal(r, null);
+        final BigDecimal rBigDecimal = objectToBigDecimal(r, null, false);
         if (lBigDecimal == null || rBigDecimal == null) {
             return false;
         }

src/main/java/org/json/JSONPointer.java

@@ -188,7 +188,7 @@ public class JSONPointer {
     }
 
     /**
-     * @see https://tools.ietf.org/html/rfc6901#section-3
+     * @see <a href="https://tools.ietf.org/html/rfc6901#section-3">rfc6901 section 3</a>
      */
     private static String unescape(String token) {
         return token.replace("~1", "/").replace("~0", "~");
@@ -268,7 +268,7 @@ public class JSONPointer {
      * @param token the JSONPointer segment value to be escaped
      * @return the escaped value for the token
      * 
-     * @see https://tools.ietf.org/html/rfc6901#section-3
+     * @see <a href="https://tools.ietf.org/html/rfc6901#section-3">rfc6901 section 3</a>
      */
     private static String escape(String token) {
         return token.replace("~", "~0")

src/main/java/org/json/XMLParserConfiguration.java

@@ -182,7 +182,7 @@ public class XMLParserConfiguration {
      * When parsing the XML into JSON, specifies if values should be kept as strings (<code>true</code>), or if
      * they should try to be guessed into JSON values (numeric, boolean, string)
      * 
-     * @return The {@link #keepStrings} configuration value.
+     * @return The <code>keepStrings</code> configuration value.
      */
     public boolean isKeepStrings() {
         return this.keepStrings;
@@ -193,7 +193,7 @@ public class XMLParserConfiguration {
      * they should try to be guessed into JSON values (numeric, boolean, string)
      * 
      * @param newVal
-     *      new value to use for the {@link #keepStrings} configuration option.
+     *      new value to use for the <code>keepStrings</code> configuration option.
      * 
      * @return The existing configuration will not be modified. A new configuration is returned.
      */
@@ -208,7 +208,7 @@ public class XMLParserConfiguration {
      * been the value "content" but can be changed. Use <code>null</code> to indicate no CDATA
      * processing.
      * 
-     * @return The {@link #cDataTagName} configuration value.
+     * @return The <code>cDataTagName</code> configuration value.
      */
     public String getcDataTagName() {
         return this.cDataTagName;
@@ -220,7 +220,7 @@ public class XMLParserConfiguration {
      * processing.
      * 
      * @param newVal
-     *      new value to use for the {@link #cDataTagName} configuration option.
+     *      new value to use for the <code>cDataTagName</code> configuration option.
      * 
      * @return The existing configuration will not be modified. A new configuration is returned.
      */
@@ -235,7 +235,7 @@ public class XMLParserConfiguration {
      * should be kept as attribute(<code>false</code>), or they should be converted to
      * <code>null</code>(<code>true</code>)
      * 
-     * @return The {@link #convertNilAttributeToNull} configuration value.
+     * @return The <code>convertNilAttributeToNull</code> configuration value.
      */
     public boolean isConvertNilAttributeToNull() {
         return this.convertNilAttributeToNull;
@@ -247,7 +247,7 @@ public class XMLParserConfiguration {
      * <code>null</code>(<code>true</code>)
      * 
      * @param newVal
-     *      new value to use for the {@link #convertNilAttributeToNull} configuration option.
+     *      new value to use for the <code>convertNilAttributeToNull</code> configuration option.
      * 
      * @return The existing configuration will not be modified. A new configuration is returned.
      */
@@ -262,7 +262,7 @@ public class XMLParserConfiguration {
      * will be converted to target type defined to client in this configuration
      * {@code Map<String, XMLXsiTypeConverter<?>>} to parse values with attribute
      * xsi:type="integer" as integer,  xsi:type="string" as string
-     * @return {@link #xsiTypeMap} unmodifiable configuration map.
+     * @return <code>xsiTypeMap</code> unmodifiable configuration map.
      */
     public Map<String, XMLXsiTypeConverter<?>> getXsiTypeMap() {
         return this.xsiTypeMap;

src/test/java/org/json/junit/JSONObjectTest.java

@@ -126,6 +126,9 @@ public class JSONObjectTest {
         
         assertTrue("Should eval to true", obj1.similar(obj4));
         
+        // verify that a double and big decimal are "similar"
+        assertTrue("should eval to true",new JSONObject().put("a",1.1d).similar(new JSONObject("{\"a\":1.1}")));
+        
     }
     
     @Test
@@ -940,7 +943,7 @@ public class JSONObjectTest {
         assertTrue("-0 Should be a Double!",JSONObject.stringToValue("-0")  instanceof Double);
         assertTrue("-0.0 Should be a Double!",JSONObject.stringToValue("-0.0") instanceof Double);
         assertTrue("'-' Should be a String!",JSONObject.stringToValue("-") instanceof String);
-        assertTrue( "0.2 should be a Double!",
+        assertTrue( "0.2 should be a BigDecimal!",
                 JSONObject.stringToValue( "0.2" ) instanceof BigDecimal );
         assertTrue( "Doubles should be BigDecimal, even when incorrectly converting floats!",
                 JSONObject.stringToValue( new Double( "0.2f" ).toString() ) instanceof BigDecimal );

src/test/java/org/json/junit/JSONPointerTest.java

@@ -120,7 +120,7 @@ public class JSONPointerTest {
     /**
      * We pass backslashes as-is
      * 
-     * @see https://tools.ietf.org/html/rfc6901#section-3
+     * @see <a href="https://tools.ietf.org/html/rfc6901#section-3">rfc6901 section 3</a>
      */
     @Test
     public void backslashHandling() {
@@ -130,7 +130,7 @@ public class JSONPointerTest {
     /**
      * We pass quotations as-is
      * 
-     * @see https://tools.ietf.org/html/rfc6901#section-3
+     * @see <a href="https://tools.ietf.org/html/rfc6901#section-3">rfc6901 section 3</a>
      */
     @Test
     public void quotationHandling() {

src/test/java/org/json/junit/data/ExceptionalBean.java

@@ -8,7 +8,7 @@ import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 
 /**
- * Object for testing the exception handling in {@link JSONObject#populateMap}.
+ * Object for testing the exception handling in {@link org.json.JSONObject#populateMap}.
  * 
  * @author John Aylward
  */