Commitd7aebba

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Add ability to detect null string (happens when nodes gets deleted)

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+14

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+14

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Lines changed: 6 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -54,13 +54,18 @@ float FirebaseObject::getFloat(const String& path) const {`
`54`	`54`
`55`	`55`	`StringFirebaseObject::getString(const String& path)const {`
`56`	`56`	`JsonVariant variant =getJsonVariant(path);`
`57`		`-if (!variant.is<constchar *>()) {`
	`57`	`+if (!variant.is<constchar *>() \|\|isNullString(path)) {`
`58`	`58`	`error_ ="failed to convert to string";`
`59`	`59`	`return"";`
`60`	`60`	`}`
`61`	`61`	`returnstatic_cast<constchar*>(variant);`
`62`	`62`	`}`
`63`	`63`
	`64`	`+boolFirebaseObject::isNullString(const String& path)const {`
	`65`	`+ JsonVariant variant =getJsonVariant(path);`
	`66`	`+return variant.is<constchar *>() && variant.asString() ==NULL;`
	`67`	`+}`
	`68`	`+`
`64`	`69`	`JsonVariantFirebaseObject::getJsonVariant(const String& path)const {`
`65`	`70`	`Stringkey(path);`
`66`	`71`	`char* start = &key[0];`

Lines changed: 8 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -43,6 +43,14 @@ class FirebaseObject {`
`43`	`43`	`*/`
`44`	`44`	`boolgetBool(const String& path ="")const;`
`45`	`45`
	`46`	`+/**`
	`47`	`+ * Returns true if specified path is NULL string.`
	`48`	`+ * Useful to detect tree deletions.`
	`49`	`+ * \param optional path in the JSON object.`
	`50`	`+ * \return result as a bool.`
	`51`	`+*/`
	`52`	`+boolisNullString(const String& path ="")const;`
	`53`	`+`
`46`	`54`	`/**`
`47`	`55`	`* Return the value as an int.`
`48`	`56`	`* \param optional path in the JSON object.`

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