48 results about "Execution tree" patented technology

A graphics object can be expressed using procedural language embedded in a markup language document. In a embodiment, a drawing space is specified in markup language. A drawing command to arbitrarily draw a graphics object into the drawing space is specified in procedural language. Interpretation of the markup and procedural language commands results in the rendering of the arbitrary graphics object. In another embodiment, there is a browser comprising a rendering engine, an interpreter, and parser. The rendering engine is configured to interpret a markup language instruction that specifies a drawing space as well as drawing commands in procedural language for drawing an arbitrary graphic object into the drawing space. The parser can then parse the drawing commands and convert them into an execution tree of tree objects.

A semantic query over an RDF database is received with RDF database statistics and access methods for evaluating triple patterns in the query. The semantic query is expressed as a parse tree containing triple patterns and logical relationships among the triple patterns. The parse tree and access methods create a data flow graph containing a plurality of triple pattern and access method pair nodes connected by a plurality of edges, and an optimal flow tree through the data flow graph is determined such that costs are minimized and all triple patterns in the semantic query are contained in the optimal flow tree. A structure independent execution tree defining a sequence of evaluation through the optimal flow tree is created and is transformed into a database structure dependent query plan. This is used to create an SQL query that is used to evaluate the semantic query over the RDF database.

The invention discloses a transaction processing method and device of a distributed database system. The method comprises the following steps: receiving a transaction SQL (Structured Query Language) statement handed by a user via a global transaction processing central server, and generating a SQL syntax tree according to the SQL statement; traversing the SQL syntax tree, and generating a SQL execution tree which can be executed in each database node of the distributed database system according to the distribution situation of the distributed database system; applying for a GTID (Global Transaction ID) corresponding to the SQL execution tree, traversing the SQL execution tree, and issuing the SQL statement on the execution node of the SQL execution tree to be executed on the corresponding database node, wherein the GTID is carried in the SQL statement; and receiving an execution result, traversing the SQL execution tree according to the execution result, returning the execution result to a user after a determination result shows that all SQL statements on the SQL execution tree finish being executed, and releasing the GTID.

The invention provides an execution method and device for databases. The method comprises following steps: receiving structured query SQL requests of database operation for one or multiple databases; generating corresponding syntax trees in accordance with the received SQL requests; searching all nodes for generation of the syntax trees and generating execution trees; and executing database operation for one or multiple databases based on generated syntax trees. By adoption of the execution method and device for databases, that technical problem in the prior art that associated data of inter-database nodes cannot be searched is solved, thereby achieving the technical effect of searching associated data for inter-database nodes.

The invention belongs to the field of software, and provides a database kernel query optimization method based on an equivalence class. The method comprises the steps of using a function for processing description after the keyword 'from' and before the keyword 'where' in sql sentences after inquire statements enter a sub query optimizer, processing a nest tree structure with explicit connection or a linked list with no connection mode assigned, extracting list information, obtaining list objects, initializing the Col and Eclass bit variables contained by the list objects, and filling a linked list RELS; processing the restricted condition linked list 'quals' after the 'on' and after the 'where' in the sql sentences, and carrying out transmission on the restricted conditions according to the Eclass bit variables; entering an enumerator, enlarging planed searching space according to the Eclass bit variables, enumerating more equivalence plans, and entering a cost calculator to count cost; obtaining the plan with the minimum cost as a final execution plan, wherein the execution plan is compiled into an execution tree, and the execution plan is sent to an actuator to be executed. The database kernel query optimization method based on the equivalence class has the advantages of being high in performance.

The invention provides a big data self-adaption topology processing method based on a storm.The method comprises the steps of user request monitoring, request information analyzing, topology logic generating and data flow query.Operation operator are selected according to different needs of different users by monitoring the customized service request of the users in real time, services are dynamically customized, topology logic of storm recognizable operation is generated, and therefore dynamic customizing and real-time processing of the data processing services are achieved; the corresponding operators are conveniently selected through an operator execution tree, the optimal operation execution topology meeting the customizing requests of the users is formed, the pertinence of data flow query and mining is enhanced, and the timeliness of data is guaranteed as much as possible.

Nodes in a query execution data structure have monitor and dump methods defined. The monitor method enables the collection of information from the node. The dump method outputs the monitored information from each node. A monitor and debug mechanism of the preferred embodiments includes a graphical user interface that allows a user to graphically examine a query execution tree, to enable monitoring of the nodes on a node-by-node basis, and to view information dumped from the query execution data structure as the query is executed or after the query is executed. The result is a powerful tool that allows efficiently monitoring and debugging a query implemented in an object oriented query execution data structure.

A method for determining component placement in a circuit includes forming a tree structure that defines the placement of each of a plurality of components associated with the tree structure on a first side, a second side or on both sides of a symmetry line, with at least one component tagged for symmetric placement on both sides of a symmetry line; performing at least one search of the tree structure to determine an initial placement of a subset of the components; and performing another search of the tree structure to determine a final placement of the subset of components whereupon at least a part of each component tagged for symmetric placement is positioned on each side of the symmetry line. The method can be embodied as instructions stored on a computer readable medium which, when executed by a processor, cause the processor to implement the method.

In various embodiments, a method for processing industrial identifiers includes receiving unstructured data. An encoding scheme is determined for the unstructured data based on an execution tree associated with a plurality of industrial identifiers. The encoding scheme is then output to an application. Data may be received for one or more fields associated with one of the plurality of industrial identifiers. An industrial identifier may be generated based on the execution tree in response to the data.

The invention provides a method and a system for executing a data stream of a Web service. The method comprises the following steps: creating an execution tree of the Web service; responding to the change of a data source of a node or responding to the change of the data processing logic of a node and determining a changed path so as to determine a path requiring to be renewedly executed; executing the path requiring to be renewedly executed, wherein the execution tree comprises a plurality of execution paths, and each execution path comprises a plurality of nodes and connections among the nodes. Once the execution tree is created, when the data stream requires to be renewedly operated next time, if the execution path of the data stream is not changed, for example the place for receiving data of a node is not changed, only the data source is changed or the data processing logic is changed, the execution tree does not need to be renewedly created according to the method and the system, but the execution paths can be reduced.

The invention relates to a static detection method for state-related defects in a large-scale system. The static detection method comprises the following steps: firstly, abstracting the state-relateddefects in the large-scale system into a form represented by a finite state machine; secondly, generating an inter-process control flow execution tree (ICFET) based on a symbol execution technology, and proposing a new interval-based path encoding/decoding algorithm to represent path constraints; based on the ICFET, alias analysis and data flow analysis are then performed in a context-sensitive and path-sensitive manner, tracking the flow of each object of each specified type to identify a sequence of events that may occur on the object. And finally, generating a program diagram according to the ICFET and alias analysis and data flow analysis. Constraint-based graph reachability calculation is performed, and if a reachable edge can reach an undefined or erroneous state in a finite state machine, there is an event sequence of undefined or erroneous states that can drive an object or group of objects to a specification, generating an erroneous report.

The invention discloses a dynamic symbol execution visualization method for vulnerability mining, and relates to the technical field of symbol execution visualization. The technical problems that in the prior art, symbol execution cannot be dynamically presented in the vulnerability mining process, and the low traversal efficiency caused by a code coverage bottleneck is difficult to overcome are solved. The method mainly comprises the steps that a vulnerability mining tool and a symbol execution visualization tool are started; the symbol execution visualization tool is set in the state of waiting to be called, and the vulnerability mining tool is executed to branch points; the vulnerability mining tool calls a symbol execution tree drawing module of the symbol execution visualization tool to construct branch nodes and then sends branch information to the branch nodes; overall statistic data of all the current branch nodes is updated through a data statistics module of the symbol execution visualization tool; in the overall statistic data, the symbol execution tree drawing module creates next branch nodes and sets the positions of the branch nodes according to calling data and branch information. The method is used for symbol execution visualization.

The invention relates to a process access file control method and device, and the method comprises the steps: monitoring a system process, responding to the monitored newly built process, and recognizing a script program of the process; storing the process and the structure data of the script program into a script execution tree cache; in response to monitoring that the process initiates access tothe file, querying the process and structure data of the script program of the process in the script execution tree cache to determine the script program which initiates access to the file; and controlling the access of the script program to the file according to the preset authority of the script program. According to the method provided by the invention, only the specified script program is allowed to access the specified file, and important data is protected from being illegally tampered.

The invention discloses a binary system translation method and device based on the execution tree depth. The method comprises the steps that when a super block begins to be constructed, the execution tree depth is initialized to be zero, a preset execution tree depth threshold value is obtained, translation is started from a basic block where a preset initial address is located, and in the translating process, if a current instruction of the translated basic block is a direct skip instruction, a basic block which the direct skip instruction enters is translated; if the current instruction of the translated basic block is a condition skip instruction, a basic block after the condition skip instruction skips and the next basic block of the condition skip instruction are translated, and one is added into the execution tree depth; if the current instruction of the translated basic block is a function call instruction, functions corresponding to the function call instruction are translated, one is added into the execution tree depth, when the execution tree depth reaches the execution tree depth threshold value, translation is finished, and all the translated basic blocks form the super block. The method and the device can promote the performance of an execution translation program.

The embodiment of the invention provides a method and device for converting a code language, and relates to the technical field of databases. The method comprises the steps of obtaining a first data type and a data type of an SQL code corresponding to a source code; obtaining a second data type according to the first data type and the first corresponding relationship, wherein the second data typeis a data type of an execution tree corresponding to the SQL code of the first data type; obtaining a third data type according to the second data type and the second corresponding relationship, wherein the third data type is a data type of a C language corresponding to the execution tree of the second data type; converting the source code into an execution tree of which the data type is a seconddata type; and converting the execution tree into a C language code of which the data type is a third data type. The method is used for realizing data processing of the database in a compilation execution mode under the condition that the source code is the SQL code and the target code is the C language code.

An object is to assist analysis work on a program in software development and improve program development efficiency. A program analysis apparatus performs symbolic-execution on a program stored in a storage device, receives an input of a change point of the program, and based on a result of the symbolic-execution, identifies an influenced segment of the program when the program is changed for the change point. The program analysis apparatus receives the change point by receiving a change operation on any one of a symbolic summary which is a terminal node of an execution tree obtained by the symbolic-execution, a decision table based on the symbolic summary, and a source code. The program analysis apparatus visualizes the influenced segment of the identified program in any mode of the symbolic summary, the source code, and the decision table.