SearchOperation.kt

package com.sipios.springsearch

enum class SearchOperation {
    EQUALS,
    NOT_EQUALS,
    GREATER_THAN,
    LESS_THAN,
    STARTS_WITH,
    ENDS_WITH,
    CONTAINS,
    DOESNT_START_WITH,
    DOESNT_END_WITH,
    DOESNT_CONTAIN,
    GREATER_THAN_EQUALS,
    LESS_THAN_EQUALS,
    IN_ARRAY,
    NOT_IN_ARRAY,
    IS,
    IS_NOT,
    BETWEEN,
    NOT_BETWEEN,
    ;

    companion object {
        val SIMPLE_OPERATION_SET = arrayOf(":", "!", ">", "<", "~", ">:", "<:")
        val ZERO_OR_MORE_REGEX = "*"
        val OR_OPERATOR = "OR"
        val AND_OPERATOR = "AND"
        val LEFT_PARANTHESIS = "("
        val RIGHT_PARANTHESIS = ")"
        val EMPTY = "EMPTY"
        val NULL = "NULL"

        /**
         * Parse a string into an operation.
         *
         * @param input operation as string
         * @return The matching operation
         */
        fun getSimpleOperation(
            input: String
        ): SearchOperation? {
            return when (input) {
                ":" -> EQUALS
                "!" -> NOT_EQUALS
                ">" -> GREATER_THAN
                "<" -> LESS_THAN
                ">:" -> GREATER_THAN_EQUALS
                "<:" -> LESS_THAN_EQUALS
                else -> null
            }
        }
    }
}