Start work on #129

Author: cowtowncoder

datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/InstantDeserializer.java

@@ -152,13 +152,19 @@ protected InstantDeserializer(InstantDeserializer<T> base, Boolean adjustToConte
     }
 
     @Override
-    protected JsonDeserializer<T> withDateFormat(DateTimeFormatter dtf) {
+    protected InstantDeserializer<T> withDateFormat(DateTimeFormatter dtf) {
         if (dtf == _formatter) {
             return this;
         }
         return new InstantDeserializer<T>(this, dtf);
     }
 
+    // !!! TODO: lenient vs strict?
+    @Override
+    protected InstantDeserializer<T> withLeniency(Boolean leniency) {
+        return this;
+    }
+    
     @SuppressWarnings("unchecked")
     @Override
     public T deserialize(JsonParser parser, DeserializationContext context) throws IOException

datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/JSR310DateTimeDeserializerBase.java

@@ -6,6 +6,7 @@
 
 import com.fasterxml.jackson.annotation.JsonFormat;
 import com.fasterxml.jackson.core.JsonParser;
+import com.fasterxml.jackson.core.JsonToken;
 import com.fasterxml.jackson.databind.BeanProperty;
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.JsonDeserializer;
@@ -19,19 +20,60 @@ public abstract class JSR310DateTimeDeserializerBase<T>
 {
     protected final DateTimeFormatter _formatter;
 
-    protected JSR310DateTimeDeserializerBase(Class<T> supportedType, DateTimeFormatter f)
-    {
+    /**
+     * Flag that indicates what leniency setting is enabled for this deserializer (either
+     * due {@link JsonFormat} annotation on property or class, or due to per-type
+     * "config override", or from global settings): leniency/strictness has effect
+     * on accepting some non-default input value representations (such as integer values
+     * for dates).
+     *<p>
+     * Note that global default setting is for leniency to be enabled, for Jackson 2.x,
+     * and has to be explicitly change to force strict handling: this is to keep backwards
+     * compatibility with earlier versions.
+     *
+     * @since 2.10
+     */
+    protected final boolean _isLenient;
+
+    protected JSR310DateTimeDeserializerBase(Class<T> supportedType, DateTimeFormatter f) {
         super(supportedType);
         _formatter = f;
+        _isLenient = true;
     }
 
-    protected abstract JsonDeserializer<T> withDateFormat(DateTimeFormatter dtf);
+    /**
+     * @since 2.10
+     */
+    protected JSR310DateTimeDeserializerBase(JSR310DateTimeDeserializerBase<T> base,
+            DateTimeFormatter f) {
+        super(base);
+        _formatter = f;
+        _isLenient = base._isLenient;
+    }
+    
+    /**
+     * @since 2.10
+     */
+    protected JSR310DateTimeDeserializerBase(JSR310DateTimeDeserializerBase<T> base,
+            Boolean leniency) {
+        super(base);
+        _formatter = base._formatter;
+        _isLenient = !Boolean.FALSE.equals(leniency);
+    }
+
+    protected abstract JSR310DateTimeDeserializerBase<T> withDateFormat(DateTimeFormatter dtf);
+
+    /**
+     * @since 2.10
+     */
+    protected abstract JSR310DateTimeDeserializerBase<T> withLeniency(Boolean leniency);
 
     @Override
     public JsonDeserializer<?> createContextual(DeserializationContext ctxt,
             BeanProperty property) throws JsonMappingException
     {
         JsonFormat.Value format = findFormatOverrides(ctxt, property, handledType());
+        JSR310DateTimeDeserializerBase<?> deser = this;
         if (format != null) {
             if (format.hasPattern()) {
                 final String pattern = format.getPattern();
@@ -47,18 +89,42 @@ public JsonDeserializer<?> createContextual(DeserializationContext ctxt,
                 if (format.hasTimeZone()) {
                     df = df.withZone(format.getTimeZone().toZoneId());
                 }
-                return withDateFormat(df);
+                deser = deser.withDateFormat(df);
+            }
+            // 17-Aug-2019, tatu: For 2.10 let's start considering leniency/strictness too
+            if (format.hasLenient()) {
+                Boolean leniency = format.getLenient();
+                if (leniency != null) {
+                    deser = deser.withLeniency(leniency);
+                }
             }
             // any use for TimeZone?
         }
-        return this;
-   }
+        return deser;
+    }
 
+    /**
+     * @return {@code true} if lenient handling is enabled; {code false} if not (strict mode)
+     *
+     * @since 2.10
+     */
+    protected boolean isLenient() {
+        return _isLenient;
+    }
+    
     protected void _throwNoNumericTimestampNeedTimeZone(JsonParser p, DeserializationContext ctxt)
         throws IOException
     {
         ctxt.reportInputMismatch(handledType(),
 "raw timestamp (%d) not allowed for `%s`: need additional information such as an offset or time-zone (see class Javadocs)",
 p.getNumberValue(), handledType().getName());
     }
+
+    @SuppressWarnings("unchecked")
+    protected T _failForNotLenient(JsonParser p, DeserializationContext ctxt,
+            JsonToken expToken) throws IOException
+    {
+       return (T) ctxt.handleUnexpectedToken(handledType(), expToken, p,
+               "not allowed because 'strict' mode set for property or type (enabled 'lenient' handling to allow)"); 
+    }
 }

datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/JSR310DeserializerBase.java

@@ -38,11 +38,17 @@ abstract class JSR310DeserializerBase<T> extends StdScalarDeserializer<T>
 {
     private static final long serialVersionUID = 1L;
 
-    protected JSR310DeserializerBase(Class<T> supportedType)
-    {
+    protected JSR310DeserializerBase(Class<T> supportedType) {
         super(supportedType);
     }
 
+    /**
+     * @since 2.10
+     */
+    protected JSR310DeserializerBase(JSR310DeserializerBase<?> base) {
+        super(base);
+    }
+    
     @Override
     public Object deserializeWithType(JsonParser parser, DeserializationContext context,
             TypeDeserializer typeDeserializer)

datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/LocalDateDeserializer.java

@@ -27,13 +27,11 @@
 import com.fasterxml.jackson.core.*;
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.JsonDeserializer;
 
 /**
  * Deserializer for Java 8 temporal {@link LocalDate}s.
  *
  * @author Nick Williams
- * @since 2.2.0
  */
 public class LocalDateDeserializer extends JSR310DateTimeDeserializerBase<LocalDate>
 {
@@ -43,19 +41,38 @@ public class LocalDateDeserializer extends JSR310DateTimeDeserializerBase<LocalD
 
     public static final LocalDateDeserializer INSTANCE = new LocalDateDeserializer();
 
-    private LocalDateDeserializer() {
+    protected LocalDateDeserializer() {
         this(DEFAULT_FORMATTER);
     }
 
     public LocalDateDeserializer(DateTimeFormatter dtf) {
         super(LocalDate.class, dtf);
     }
 
+    /**
+     * Since 2.10
+     */
+    public LocalDateDeserializer(LocalDateDeserializer base, DateTimeFormatter dtf) {
+        super(base, dtf);
+    }
+
+    /**
+     * Since 2.10
+     */
+    protected LocalDateDeserializer(LocalDateDeserializer base, Boolean leniency) {
+        super(base, leniency);
+    }
+
     @Override
-    protected JsonDeserializer<LocalDate> withDateFormat(DateTimeFormatter dtf) {
-        return new LocalDateDeserializer(dtf);
+    protected LocalDateDeserializer withDateFormat(DateTimeFormatter dtf) {
+        return new LocalDateDeserializer(this, dtf);
     }
-    
+
+    @Override
+    protected LocalDateDeserializer withLeniency(Boolean leniency) {
+        return new LocalDateDeserializer(this, leniency);
+    }
+
     @Override
     public LocalDate deserialize(JsonParser parser, DeserializationContext context) throws IOException
     {
@@ -116,6 +133,9 @@ public LocalDate deserialize(JsonParser parser, DeserializationContext context)
         }
         // 06-Jan-2018, tatu: Is this actually safe? Do users expect such coercion?
         if (parser.hasToken(JsonToken.VALUE_NUMBER_INT)) {
+            if (!isLenient()) {
+                return _failForNotLenient(parser, context, JsonToken.VALUE_STRING);
+            }
             return LocalDate.ofEpochDay(parser.getLongValue());
         }
         return _handleUnexpectedToken(context, parser, "Expected array or string.");

datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/LocalDateTimeDeserializer.java

@@ -28,7 +28,6 @@
 import com.fasterxml.jackson.core.JsonTokenId;
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.JsonDeserializer;
 
 /**
  * Deserializer for Java 8 temporal {@link LocalDateTime}s.
@@ -54,10 +53,16 @@ public LocalDateTimeDeserializer(DateTimeFormatter formatter) {
     }
 
     @Override
-    protected JsonDeserializer<LocalDateTime> withDateFormat(DateTimeFormatter formatter) {
+    protected LocalDateTimeDeserializer withDateFormat(DateTimeFormatter formatter) {
         return new LocalDateTimeDeserializer(formatter);
     }
 
+    // !!! TODO: lenient vs strict?
+    @Override
+    protected LocalDateTimeDeserializer withLeniency(Boolean leniency) {
+        return this;
+    }
+
     @Override
     public LocalDateTime deserialize(JsonParser parser, DeserializationContext context) throws IOException
     {

datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/LocalTimeDeserializer.java

@@ -25,13 +25,11 @@
 import com.fasterxml.jackson.core.JsonToken;
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.JsonDeserializer;
 
 /**
  * Deserializer for Java 8 temporal {@link LocalTime}s.
  *
  * @author Nick Williams
- * @since 2.2.0
  */
 public class LocalTimeDeserializer extends JSR310DateTimeDeserializerBase<LocalTime>
 {
@@ -50,10 +48,16 @@ public LocalTimeDeserializer(DateTimeFormatter formatter) {
     }
 
     @Override
-    protected JsonDeserializer<LocalTime> withDateFormat(DateTimeFormatter formatter) {
+    protected LocalTimeDeserializer withDateFormat(DateTimeFormatter formatter) {
         return new LocalTimeDeserializer(formatter);
     }
-    
+
+    // !!! TODO: lenient vs strict?
+    @Override
+    protected LocalTimeDeserializer withLeniency(Boolean leniency) {
+        return this;
+    }
+
     @Override
     public LocalTime deserialize(JsonParser parser, DeserializationContext context) throws IOException
     {

datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/MonthDayDeserializer.java

@@ -9,7 +9,6 @@
 import com.fasterxml.jackson.core.JsonToken;
 import com.fasterxml.jackson.databind.DeserializationContext;
 import com.fasterxml.jackson.databind.DeserializationFeature;
-import com.fasterxml.jackson.databind.JsonDeserializer;
 
 /**
  * Deserializer for Java 8 temporal {@link MonthDay}s.
@@ -25,10 +24,16 @@ public MonthDayDeserializer(DateTimeFormatter formatter) {
     }
 
     @Override
-    protected JsonDeserializer<MonthDay> withDateFormat(DateTimeFormatter dtf) {
+    protected MonthDayDeserializer withDateFormat(DateTimeFormatter dtf) {
         return new MonthDayDeserializer(dtf);
     }
-    
+
+    // !!! TODO: lenient vs strict?
+    @Override
+    protected MonthDayDeserializer withLeniency(Boolean leniency) {
+        return this;
+    }
+
     @Override
     public MonthDay deserialize(JsonParser parser, DeserializationContext context) throws IOException
     {

datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/OffsetTimeDeserializer.java

@@ -45,10 +45,16 @@ protected OffsetTimeDeserializer(DateTimeFormatter dtf) {
     }
 
     @Override
-    protected JsonDeserializer<OffsetTime> withDateFormat(DateTimeFormatter dtf) {
+    protected OffsetTimeDeserializer withDateFormat(DateTimeFormatter dtf) {
         return new OffsetTimeDeserializer(dtf);
     }
-    
+
+    // !!! TODO: lenient vs strict?
+    @Override
+    protected OffsetTimeDeserializer withLeniency(Boolean leniency) {
+        return this;
+    }
+
     @Override
     public OffsetTime deserialize(JsonParser parser, DeserializationContext context) throws IOException
     {

datetime/src/main/java/com/fasterxml/jackson/datatype/jsr310/deser/YearDeserializer.java

@@ -19,7 +19,6 @@
 import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.core.JsonToken;
 import com.fasterxml.jackson.databind.DeserializationContext;
-import com.fasterxml.jackson.databind.JsonDeserializer;
 
 import java.io.IOException;
 import java.time.DateTimeException;
@@ -30,7 +29,6 @@
  * Deserializer for Java 8 temporal {@link Year}s.
  *
  * @author Nick Williams
- * @since 2.2
  */
 public class YearDeserializer extends JSR310DateTimeDeserializerBase<Year>
 {
@@ -48,10 +46,16 @@ public YearDeserializer(DateTimeFormatter formatter) {
     }
 
     @Override
-    protected JsonDeserializer<Year> withDateFormat(DateTimeFormatter dtf) {
+    protected YearDeserializer withDateFormat(DateTimeFormatter dtf) {
         return new YearDeserializer(dtf);
     }
 
+    // !!! TODO: lenient vs strict?
+    @Override
+    protected YearDeserializer withLeniency(Boolean leniency) {
+        return this;
+    }
+
     @Override
     public Year deserialize(JsonParser parser, DeserializationContext context) throws IOException
     {