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Allow to deserialize an empty string to null #630

Merged
merged 2 commits into from Nov 2, 2023
Merged

Allow to deserialize an empty string to null #630

merged 2 commits into from Nov 2, 2023

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dstepanov
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Not sure if this is the best solution. Maybe it should be configurable?

Fixes #619

sdelamo
sdelamo reviewed Nov 1, 2023
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serde-jackson/src/main/java/io/micronaut/serde/jackson/JacksonDecoder.java
@@ -292,6 +292,17 @@ private Boolean decodeBooleanSlow() throws IOException {
return null;
}
case START_OBJECT, END_OBJECT, END_ARRAY, FIELD_NAME -> throw unexpectedToken(JsonToken.VALUE_TRUE, t);
case VALUE_STRING -> {
String string = parser.getText();
if (string.isEmpty()) {
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Should we use?

Suggested change
if (string.isEmpty()) {
if (StringUtils.isEmpty(string)) {

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why?

serde-jackson/src/main/java/io/micronaut/serde/jackson/JacksonDecoder.java
@@ -312,6 +323,17 @@ public byte decodeByte() throws IOException {
public Byte decodeByteNullable() throws IOException {
JsonToken t = nextToken();
switch (t) {
case VALUE_STRING -> {
String string = parser.getText();
if (string.isEmpty()) {
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Suggested change
if (string.isEmpty()) {
if (StringUtils.isEmpty(string)) {

serde-jackson/src/main/java/io/micronaut/serde/jackson/JacksonDecoder.java
@@ -353,6 +375,17 @@ public short decodeShort() throws IOException {
public Short decodeShortNullable() throws IOException {
JsonToken t = nextToken();
switch (t) {
case VALUE_STRING -> {
String string = parser.getText();
if (string.isEmpty()) {
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Suggested change
if (string.isEmpty()) {
if (StringUtils.isEmpty(string)) {

serde-jackson/src/main/java/io/micronaut/serde/jackson/JacksonDecoder.java
@@ -407,6 +440,9 @@ public Character decodeCharNullable() throws IOException {
}
case VALUE_STRING -> {
String string = parser.getText();
if (string.isEmpty()) {
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Suggested change
if (string.isEmpty()) {
if (StringUtils.isEmpty(string)) {

serde-jackson/src/main/java/io/micronaut/serde/jackson/JacksonDecoder.java
@@ -460,6 +496,9 @@ private Integer decodeIntSlow() throws IOException {
}
case VALUE_STRING -> {
String string = parser.getText();
if (string.isEmpty()) {
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Suggested change
if (string.isEmpty()) {
if (StringUtils.isEmpty(string)) {

serde-jackson/src/main/java/io/micronaut/serde/jackson/JacksonDecoder.java
@@ -579,13 +619,14 @@ public Float decodeFloatNullable() throws IOException {
switch (t) {
case VALUE_STRING -> {
String string = parser.getText();
float value;
if (string.isEmpty()) {
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Suggested change
if (string.isEmpty()) {
if (StringUtils.isEmpty(string)) {

serde-jackson/src/main/java/io/micronaut/serde/jackson/JacksonDecoder.java
@@ -641,6 +682,9 @@ private Double decodeDoubleSlow(JsonToken t) throws IOException {
}
case VALUE_STRING -> {
String string = parser.getText();
if (string.isEmpty()) {
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Suggested change
if (string.isEmpty()) {
if (StringUtils.isEmpty(string)) {

serde-jackson/src/main/java/io/micronaut/serde/jackson/JacksonDecoder.java
@@ -691,6 +735,9 @@ public BigInteger decodeBigIntegerNullable() throws IOException {
switch (t) {
case VALUE_STRING -> {
String string = parser.getText();
if (string.isEmpty()) {
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Suggested change
if (string.isEmpty()) {
if (StringUtils.isEmpty(string)) {

serde-jackson/src/main/java/io/micronaut/serde/jackson/JacksonDecoder.java
@@ -741,6 +788,9 @@ public BigDecimal decodeBigDecimalNullable() throws IOException {
switch (t) {
case VALUE_STRING -> {
String string = parser.getText();
if (string.isEmpty()) {
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Suggested change
if (string.isEmpty()) {
if (StringUtils.isEmpty(string)) {

serde-jackson/src/main/java/io/micronaut/serde/jackson/JacksonDecoder.java Outdated
@@ -793,7 +843,8 @@ private Number decodeNumber() throws IOException {

@Override
public boolean decodeNull() throws IOException {
if (peekToken() == JsonToken.VALUE_NULL) {
JsonToken jsonToken = peekToken();
if (jsonToken == JsonToken.VALUE_NULL || jsonToken == JsonToken.VALUE_STRING && parser.getText().isBlank()) {
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Suggested change
if (jsonToken == JsonToken.VALUE_NULL || jsonToken == JsonToken.VALUE_STRING && parser.getText().isBlank()) {
if (jsonToken == JsonToken.VALUE_NULL || jsonToken == JsonToken.VALUE_STRING && StringUtils.isEmpty(parser.getText())) {

@dstepanov
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I think that utility method is needed

@yawkat
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yawkat commented Nov 2, 2023

why on earth does JacksonDecoder matter for forms?

@dstepanov
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To convert forms into a bean, we convert a map into the JSON node model in JsonBeanPropertyBinder and deserialize it into a bean. And we get all kind of problems like this and #616

@sonarcloud SonarCloud
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sonarcloud bot commented Nov 2, 2023

SonarCloud Quality Gate failed.    Quality Gate failed

Bug A 0 Bugs
Vulnerability A 0 Vulnerabilities
Security Hotspot A 0 Security Hotspots
Code Smell A 1 Code Smell

79.6% 79.6% Coverage
0.0% 0.0% Duplication

idea Catch issues before they fail your Quality Gate with our IDE extension sonarlint SonarLint

@dstepanov dstepanov merged commit 017c03e into master Nov 2, 2023
11 of 12 checks passed
@dstepanov dstepanov deleted the form branch November 2, 2023 13:43
dstepanov added a commit that referenced this pull request Nov 6, 2023
@dstepanov
Revert "Allow to deserialize an empty string to null (#630)"
32020ac 
This reverts commit 017c03e.
dstepanov added a commit that referenced this pull request Nov 6, 2023
@dstepanov
Revert "Allow to deserialize an empty string to null (#630)" (#645)
9d48c72 
* Revert "Allow to deserialize an empty string to null (#630)"

This reverts commit 017c03e.

* Keep TCK updated

* Added tests
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@sdelamo sdelamo sdelamo left review comments

@graemerocher graemerocher graemerocher approved these changes

@yawkat yawkat Awaiting requested review from yawkat

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Form submission of optional number input fails
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@dstepanov @yawkat @graemerocher @sdelamo