Data relaying apparatus, data relaying method, and data relay processing program

A data relaying apparatus disposed on a network with contents and meta-information managed separately in different servers, the data relaying apparatus comprising:

• a location information extracting unit that extracts location information uniquely defining a location of contents from a content acquisition request, the content acquisition request being transmitted from a client terminal to a repository server retaining the contents;
• a meta-information acquiring unit that transmits a meta-information acquisition request to a data relaying apparatus cooperating with a registry server managing the meta-information with the use of the location information extracted by the location information extracting unit to acquire meta-information;
• and
• a content transmitting unit that receives contents to add the meta-information acquired by the meta-information acquiring unit to the contents, the contents being transmitted by the repository server accepting the content acquisition request to the client terminal transmitting the content acquisition request, the content transmitting unit relaying the contents to the client terminal.

A data relaying apparatus disposed on a network with contents and meta-information managed separately in different servers, the data relaying apparatus comprising:

• a meta-information registering unit that registers meta-information into a meta-information storage unit in correlation with location information included in the meta-information, the location information uniquely defining a location of contents, the meta-information being received from a data relaying apparatus cooperating with a registry server managing the meta-information;
• a location information extracting unit that extracts the location information from the content acquisition request, the content acquisition request being transmitted from a client terminal to a repository server retaining the contents;
• a meta information acquiring unit that acquires meta-information correlated with the location information extracted by the location information extracting unit from the meta-information storage unit;
• and
• a content relaying unit that receives contents to add the meta-information acquired by the meta-information acquiring unit to the contents, the contents being transmitted by the repository server accepting the content acquisition request to the client terminal transmitting the content acquisition request, the content relaying unit relaying the contents to the client terminal.

A data relaying apparatus disposed on a network with contents and meta-information managed separately in different servers, the data relaying apparatus comprising:

• a meta-information extracting unit that extracts meta-information from a content retrieval result, the content retrieval result being transmitted to a client terminal from a registry server accepting a content retrieval request from the client terminal, the registry server centrally managing the meta-information;
• a meta-information registering unit that registers the meta-information extracted by the meta-information extracting unit into a meta-information storage unit in correlation with location information included in the meta-information, the location information uniquely defining a location of contents;
• a location information extracting unit that receives a content acquisition request to extract the location information from the content acquisition request, the content acquisition request being transmitted to a repository server retaining the contents;
• a meta information acquiring unit that acquires meta-information correlated with the location information extracted by the location information extracting unit from the meta-information storage unit;
• and
• a content transmitting unit that receives contents to add the meta-information acquired by the meta-information acquiring unit to the contents, the contents being transmitted by the repository server accepting the content acquisition request to the client terminal transmitting the content acquisition request, the content transmitting unit relaying the contents to the client terminal.

A method for relaying data in a network with contents and meta-information managed separately in different servers, the method comprising:

• extracting meta-information from a received content retrieval result transmitted to a client terminal from a registry server accepting a content retrieval request from the client terminal, the registry server centrally managing the meta-information;
• registering the extracted meta-information into a storage unit in correlation with location information included in the meta-information, the location information uniquely defining a location of contents;
• and
• retrieving meta-information correlated with location information from the storage unit, the location information being specified in an externally-received meta-information acquisition request retrieve to transmit the meta-information acquired as a result of the retrieval to a request source.

A method for relaying data in a network with contents and meta-information managed separately in different servers, the method comprising:

• extracting location information uniquely defining a location of contents from a received content acquisition request transmitted from a client terminal to a repository server retaining the contents;
• acquiring meta information by transmitting a meta-information acquisition request to a data relaying apparatus cooperating with a registry server managing the meta-information with the use of the extracted location information;
• and
• adding the acquired meta-information to contents, the contents being transmitted from the repository server accepting the content acquisition request to the client terminal transmitting the content acquisition request;
• and
• relaying the contents with the meta-information to the client terminal.

A method for relaying data in a network with contents and meta-information managed separately in different servers, the method comprising:

• registering meta-information into a storage unit in correlation with location information included in the meta-information, the meta-information being received from a data relaying apparatus cooperating with a registry server managing the meta-information, the location information uniquely defining a location of contents;
• extracting the location information from the content acquisition request, the content acquisition request being transmitted from a client terminal to a repository server retaining the contents;
• acquiring meta-information correlated with the extracted location information from the storage unit;
• adding the acquired meta-information to contents, the contents being transmitted from the repository server accepting the content acquisition request to the client terminal transmitting the content acquisition request;
• and
• relaying the contents with the meta-information to the client terminal.

A method for relaying data in a network with contents and meta-information managed separately in different servers, the method comprising:

• extracting meta-information from a content retrieval result, the content retrieval result being transmitted to a client terminal from a registry server accepting a content retrieval request from the client terminal, the registry server centrally managing the meta-information;
• registering the extracted meta-information into a storage unit in correlation with location information included in the meta-information, the location information uniquely defining a location of contents;
• extracting the location information from a content acquisition request transmitted to a repository server retaining the contents;
• acquiring meta-information correlated with the extracted location information from the storage unit;
• adding the acquired meta-information to the contents, the contents being transmitted from the repository server accepting the content acquisition request to the client terminal transmitting the content acquisition request;
• and
• relaying the contents with the meta-information to the client terminal.

A computer program product having a computer readable medium including programmed instructions for relaying data in a network with contents and meta-information managed separately in different servers, wherein the instructions, when executed by a computer, cause the computer to perform:

• extracting meta-information from a received content retrieval result transmitted to a client terminal from a registry server accepting a content retrieval request from the client terminal, the registry server centrally managing the meta-information;
• registering the extracted meta-information into a storage unit in correlation with location information included in the meta-information, the location information uniquely defining a location of contents;
• and
• retrieving meta-information correlated with location information from the storage unit, the location information being specified in an externally-received meta-information acquisition request retrieve to transmit the meta-information acquired as a result of the retrieval to a request source.

A computer program product having a computer readable medium including programmed instructions for relaying data in a network with contents and meta-information managed separately in different servers, wherein the instructions, when executed by a computer, cause the computer to perform:

• extracting location information uniquely defining a location of contents from a received content acquisition request transmitted from a client terminal to a repository server retaining the contents;
• acquiring meta information by transmitting a meta-information acquisition request to a data relaying apparatus cooperating with a registry server managing the meta-information with the use of the extracted location information;
• and
• adding the acquired meta-information to contents, the contents being transmitted from the repository server accepting the content acquisition request to the client terminal transmitting the content acquisition request;
• and
• relaying the contents with the meta-information to the client terminal.

A computer program product having a computer readable medium including programmed instructions for relaying data in a network with contents and meta-information managed separately in different servers, wherein the instructions, when executed by a computer, cause the computer to perform:

• registering meta-information into a storage unit in correlation with location information included in the meta-information, the meta-information being received from a data relaying apparatus cooperating with a registry server managing the meta-information, the location information uniquely defining a location of contents;
• extracting the location information from the content acquisition request, the content acquisition request being transmitted from a client terminal to a repository server retaining the contents;
• acquiring meta-information correlated with the extracted location information from the storage unit;
• and
• adding the acquired meta-information to contents, the contents being transmitted from the repository server accepting the content acquisition request to the client terminal transmitting the content acquisition request;
• and
• relaying the contents with the meta-information to the client terminal.

A computer program product having a computer readable medium including programmed instructions for relaying data in a network with contents and meta-information managed separately in different servers, wherein the instructions, when executed by a computer, cause the computer to perform:

• extracting meta-information from a content retrieval result, the content retrieval result being transmitted to a client terminal from a registry server accepting a content retrieval request from the client terminal, the registry server centrally managing the meta-information;
• registering the extracted meta-information into a storage unit in correlation with location information included in the meta-information, the location information uniquely defining a location of contents;
• extracting the location information from a content acquisition request transmitted to a repository server retaining the contents;
• acquiring meta-information correlated with the extracted location information from the storage unit;
• and
• adding the acquired meta-information to the contents, the contents being transmitted from the repository server accepting the content acquisition request to the client terminal transmitting the content acquisition request;
• and
• relaying the contents with the meta-information to the client terminal.