Struct CharacterFilterLoader 

pub struct CharacterFilterLoader {}

Implementations

impl CharacterFilterLoader

pub fn load_from_value( kind: &str, value: &Value, ) -> LinderaResult<BoxCharacterFilter>

Loads a character filter based on the specified kind and configuration value.

Arguments

• kind - A string slice representing the type of the character filter to be loaded. This string must match one of the supported filter types.
• value - A serde_json::Value that contains the configuration for the filter. The structure of this value depends on the filter type.

Returns

Returns a LinderaResult<BoxCharacterFilter>, which is a boxed character filter, or an error if the filter type is unsupported or if the configuration fails to load.

Supported Filters

• JAPANESE_ITERATION_MARK_CHARACTER_FILTER_NAME: Loads a JapaneseIterationMarkCharacterFilter.
• MAPPING_CHARACTER_FILTER_NAME: Loads a MappingCharacterFilter.
• REGEX_CHARACTER_FILTER_NAME: Loads a RegexCharacterFilter.
• UNICODE_NORMALIZE_CHARACTER_FILTER_NAME: Loads a UnicodeNormalizeCharacterFilter.

Errors

• If the kind does not match any of the supported filters, an error is returned.
• If the configuration (value) for a filter is invalid, an error is returned during deserialization.

Details

• This function uses the kind argument to determine which specific character filter to load. It matches the kind string to a filter name, deserializes the value into the appropriate filter configuration, and then constructs the corresponding filter.
• If the kind does not match any supported filters, the function returns a deserialization error with an appropriate error message.

pub fn load_from_cli_flag(cli_flag: &str) -> LinderaResult<BoxCharacterFilter>

Loads a character filter based on a CLI flag string.

Arguments

• cli_flag - A string slice representing the command-line interface (CLI) flag used to specify the character filter. The flag typically contains both the filter kind and its arguments.

Returns

Returns a LinderaResult<BoxCharacterFilter>, which is a boxed character filter, or an error if the CLI flag is invalid or the filter configuration cannot be loaded.

Process

1. Parse CLI flag:
   • The parse_cli_flag function is called to extract the filter kind and its arguments from the cli_flag string.
2. Load filter from parsed values:
   • The filter kind and arguments are passed to load_from_value, which constructs the appropriate character filter based on the parsed values.

Errors

• If the CLI flag cannot be parsed, an error is returned.
• If the filter kind or its configuration is invalid, an error is returned during the filter loading process.

Details

• The CLI flag is parsed into a filter kind and arguments. These are then used to load the appropriate character filter using the load_from_value function.