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Diffstat (limited to 'icing/schema/property-util.h')
| -rw-r--r-- | icing/schema/property-util.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/icing/schema/property-util.h b/icing/schema/property-util.h index efa599c..7557879 100644 --- a/icing/schema/property-util.h +++ b/icing/schema/property-util.h @@ -113,6 +113,26 @@ PropertyInfo ParsePropertyNameExpr(std::string_view property_name_expr); std::vector<PropertyInfo> ParsePropertyPathExpr( std::string_view property_path_expr); +// A property path property_path_expr1 is considered a parent of another +// property path property_path_expr2 if: +// 1. property_path_expr2 == property_path_expr1, OR +// 2. property_path_expr2 consists of the entire path of property_path_expr1 +// + "." + [some other property path]. +// +// Note that this can only be used for property name strings that do not +// contain the property index. +// +// Examples: +// - IsParentPropertyPath("foo", "foo") will return true. +// - IsParentPropertyPath("foo", "foo.bar") will return true. +// - IsParentPropertyPath("foo", "bar.foo") will return false. +// - IsParentPropertyPath("foo.bar", "foo.foo.bar") will return false. +// +// Returns: true if property_path_expr1 is a parent property path of +// property_path_expr2. +bool IsParentPropertyPath(std::string_view property_path_expr1, + std::string_view property_path_expr2); + // Gets the desired PropertyProto from the document by given property name. // Since the input parameter is property name, this function only deals with // the first level of properties in the document and cannot deal with nested |