Extraction device, extraction method, and extraction program

1 . An extraction device comprising:

processing circuitry configured to:

receive, via a user interface, a condition for a change in a status of an operation;

create an operation pattern using a series of first states of an operation result and an order of the series of first states using the received condition for the change in the status of the operation;

generate an expression list that comprises each first state of the series of first states by dividing the operation pattern;

create and receive a state of an input predetermined operation result an order of the state as the operation pattern;

acquire an operation log;

convert data of the operation log into a series of second states;

determine whether or not the received state of the input predetermined operation result is included in the acquired operation log; and

for each first state of the series of first states from the generated expression list:

determine whether the first state matches to a second state of the series of second states;

in response to determining a match exists, extract the second state that matches to the first state included in the acquired operation log, wherein

the generating includes encoding the operation log into character string data, and converting a state of an actual operation result included in the operation log into a state that is expressed by a binary value using a state conversion rule.

2 . The extraction device according to claim 1 , wherein the processing circuitry is further configured to create the operation pattern using the character string data that is the first state of the series of the first states represented by binary values.

3 . The extraction device according to claim 1 , wherein each first state of the series of first states comprises the encoding of the character string data that represents a change of the first state.

4 . The extraction device according to claim 1 , wherein the processing circuitry is configured to determine whether the first state matches to the second state of the series of second states in a descending order of the generated expression list.

5 . The extraction device according to claim 1 , wherein the processing circuitry is configured to determine, using a regular expression processing, whether the first state matches to a second state of the series of second states.

6 . An extraction method executed by an extraction device, the extraction method comprising:

receiving, via a user interface, a condition for a change in a status of an operation;

creating an operation pattern using a series of first states of an operation result and an order of the series of first states using the received condition for the change in the status of the operation;

generating an expression list that comprises each first state of the series of first states by dividing the operation pattern;

creating and receiving a state of an input predetermined operation result an order of the state as the operation pattern;

acquiring an operation log;

converting data of the operation log into a series of second states;

determining whether or not the received state of the input predetermined operation result is included in the acquired operation log; and

for each first state of the series of first states from the generated expression list:

determining whether the first state matches to a second state of the series of second states;

in response to determining whether a match exists, extracting the second state that matches to the first state included in the acquired operation log, wherein

the generating includes encoding the operation log into character string data, and converting a state of an actual operation result included in the operation log into a state that is expressed by a binary value using a state conversion rule.

7 . A non-transitory computer-readable recording medium storing therein an extraction program that causes a computer to execute a process comprising:

receiving, via a user interface, a condition for a change in a status of an operation;

creating an operation pattern using a series of first states of an operation result and an order of the series of first states using the received condition for the change in the status of the operation;

generating an expression list that comprises each first state of the series of first states by dividing the operation pattern;

creating and receiving a state of an input predetermined operation result an order of the state as the operation pattern;

acquiring an operation log;

converting data of the operation log into a series of second states;

determining whether or not the received state of the input predetermined operation result is included in the acquired operation log; and

for each first state of the series of first states from the generated expression list:

determining whether the first state matches to a second state of the series of second states;

in response to determining whether a match exists, extracting the second state that matches to the first state included in the acquired operation log, wherein

the generating includes encoding the operation log into character string data, and converting a state of an actual operation result included in the operation log into a state that is expressed by a binary value using a state conversion rule.