/usr/lib/swipl/library/pengines.pl
AllApplicationManualNameSummaryHelp

  • swipl
    • library
      • error.pl -- Error generating support
      • apply.pl -- Apply predicates on a list
      • lists.pl -- List Manipulation
      • debug.pl -- Print debug messages and test assertions
      • broadcast.pl -- Event service
      • socket.pl -- Network socket (TCP and UDP) library
      • predicate_options.pl -- Access and analyse predicate options
      • shlib.pl -- Utility library for loading foreign objects (DLLs, shared objects)
      • option.pl -- Option list processing
      • uid.pl -- User and group management on Unix systems
      • unix.pl -- Unix specific operations
      • syslog.pl -- Unix syslog interface
      • thread_pool.pl -- Resource bounded thread management
      • gensym.pl -- Generate unique symbols
      • settings.pl -- Setting management
      • arithmetic.pl -- Extensible arithmetic
      • main.pl -- Provide entry point for scripts
      • readutil.pl -- Read utilities
      • ssl.pl -- Secure Socket Layer (SSL) library
      • crypto.pl -- Cryptography and authentication library
      • pldoc.pl -- Process source documentation
      • operators.pl -- Manage operators
      • pairs.pl -- Operations on key-value lists
      • prolog_source.pl -- Examine Prolog source-files
      • pengines.pl -- Pengines: Web Logic Programming Made Easy
        • create_pool/1
        • pengine_create/1
        • pengine_ask/3
        • pengine_next/2
        • pengine_stop/2
        • pengine_abort/1
        • pengine_destroy/1
        • pengine_destroy/2
        • pengine_self/1
        • pengine_application/1
        • current_pengine_application/1
        • pengine_property/2
        • pengine_output/1
        • pengine_debug/2
        • pengine_done/0
        • prepare_module/3
        • prepare_goal/3
        • not_sandboxed/2
        • pengine_pull_response/2
        • pengine_input/2
        • pengine_respond/3
        • pengine_event_loop/2
        • pengine_rpc/2
        • pengine_rpc/3
        • prompt/3
        • output/2
        • portray_blob/2
        • write_result/3
        • add_error_details/3
        • event_to_json/3
        • authentication_hook/3
        • pengine_user/1
      • record.pl -- Access compound arguments by name
      • memfile.pl
      • sgml.pl -- SGML, XML and HTML parser
      • quasi_quotations.pl -- Define Quasi Quotation syntax
      • pure_input.pl -- Pure Input from files and streams
      • time.pl -- Time and alarm library
      • uri.pl -- Process URIs
      • solution_sequences.pl -- Modify solution sequences
      • uuid.pl -- Universally Unique Identifier (UUID) Library
      • ordsets.pl -- Ordered set manipulation
      • random.pl -- Random numbers
      • base64.pl -- Base64 encoding and decoding
      • aggregate.pl -- Aggregation operators on backtrackable predicates
      • pcre.pl -- Perl compatible regular expression matching for SWI-Prolog
      • pengines_io.pl -- Provide Prolog I/O for HTML clients
      • sandbox.pl -- Sandboxed Prolog code
      • apply_macros.pl -- Goal expansion rules to avoid meta-calling
      • assoc.pl -- Binary associations
      • prolog_format.pl -- Analyse format specifications
      • yall.pl -- Lambda expressions
      • sha.pl -- SHA secure hashes
      • process.pl -- Create processes and redirect I/O
      • filesex.pl -- Extended operations on files
      • zlib.pl -- Zlib wrapper for SWI-Prolog
      • bdb.pl -- Berkeley DB interface
      • hash_stream.pl -- Maintain a hash on a stream
      • md5.pl -- MD5 hashes
      • porter_stem.pl
      • csv.pl -- Process CSV (Comma-Separated Values) data
      • pprint.pl -- Pretty Print Prolog terms
      • atom.pl -- Operations on atoms
      • ctypes.pl -- Character code classification
      • modules.pl -- Module utility predicates
      • occurs.pl -- Finding and counting sub-terms
      • prolog_xref.pl -- Prolog cross-referencer data collection
      • prolog_colour.pl -- Prolog syntax colouring support.
      • lazy_lists.pl -- Lazy list handling
      • prolog_code.pl -- Utilities for reasoning about code
      • ugraphs.pl -- Graph manipulation library
      • xpath.pl -- Select nodes in an XML DOM
      • iostream.pl -- Utilities to deal with streams
      • doc_http.pl -- Documentation server
      • url.pl -- Analysing and constructing URL
      • www_browser.pl -- Open a URL in the users browser
      • prolog_pack.pl -- A package manager for Prolog
      • prolog_config.pl -- Provide configuration information
      • git.pl -- Run GIT commands
      • utf8.pl -- UTF-8 encoding/decoding on lists of character codes.
      • crypt.pl
      • dialect.pl -- Support multiple Prolog dialects
      • persistency.pl -- Provide persistent dynamic predicates
      • strings.pl -- String utilities
      • dif.pl -- The dif/2 constraint
      • edinburgh.pl -- Some traditional Edinburgh predicates
      • ansi_term.pl -- Print decorated text to ANSI consoles
      • terms.pl -- Term manipulation
      • listing.pl -- List programs and pretty print clauses
      • prolog_stack.pl -- Examine the Prolog stack
      • prolog_clause.pl -- Get detailed source-information about a clause
      • prolog_breakpoints.pl -- Manage Prolog break-points
      • wfs.pl -- Well Founded Semantics interface
      • mallocinfo.pl -- Memory allocation details
      • chr.pl
      • sort.pl
      • dicts.pl -- Dict utilities
      • varnumbers.pl -- Utilities for numbered terms
      • nb_set.pl -- Non-backtrackable sets
      • tables.pl -- XSB interface to tables
      • base32.pl -- Base32 encoding and decoding
      • charsio.pl -- I/O on Lists of Character Codes
      • codesio.pl -- I/O on Lists of Character Codes
      • coinduction.pl -- Co-Logic Programming
      • date.pl -- Process dates and times
      • heaps.pl -- heaps/priority queues
      • rbtrees.pl -- Red black trees
      • statistics.pl -- Get information about resource usage
      • when.pl -- Conditional coroutining
      • backcomp.pl -- Backward compatibility
      • prolog_stream.pl -- A stream with Prolog callbacks
      • editline.pl -- BSD libedit based command line editing
      • term_to_json.pl
      • help.pl -- Text based manual
      • archive.pl -- Access several archive formats
      • doc_latex.pl -- PlDoc LaTeX backend
      • stomp.pl -- STOMP client.
      • intercept.pl -- Intercept and signal interface
      • odbc.pl
      • redis.pl -- Redis client
      • unicode.pl -- Unicode string handling
      • udp_broadcast.pl -- A UDP broadcast proxy
      • table.pl
      • protobufs.pl -- Google's Protocol Buffers ("protobufs")
      • isub.pl -- isub: a string similarity measure
      • thread.pl -- High level thread primitives
      • plunit.pl -- Unit Testing
      • mqi.pl
      • make.pl -- Reload modified source files
      • rdf_write.pl -- Write RDF/XML from a list of triples
      • rdf.pl -- RDF/XML parser
      • redis_streams.pl -- Using Redis streams
      • snowball.pl -- The Snowball multi-lingual stemmer library
      • threadutil.pl -- Interactive thread utilities
      • paxos.pl -- A Replicated Data Store
      • cgi.pl -- Read CGI parameters
      • increval.pl -- Incremental dynamic predicate modification
      • sgml_write.pl -- XML/SGML writer module
      • double_metaphone.pl -- Phonetic string matching
      • edit.pl -- Editor interface
      • quintus.pl -- Quintus compatibility
      • writef.pl -- Old-style formatted write
      • prolog_trace.pl -- Print access to predicates
      • shell.pl -- Elementary shell commands
      • prolog_debug.pl -- User level debugging tools
      • xmlenc.pl -- XML encryption library
      • prolog_jiti.pl -- Just In Time Indexing (JITI) utilities
      • streampool.pl -- Input multiplexing
      • fastrw.pl -- Fast reading and writing of terms
      • check.pl -- Consistency checking
      • portray_text.pl -- Portray text
      • optparse.pl -- command line parsing
      • files.pl
      • system.pl -- System utilities
      • prolog_codewalk.pl -- Prolog code walker
      • prolog_metainference.pl -- Infer meta-predicate properties
      • hashtable.pl -- Hash tables
      • qsave.pl -- Save current program as a state or executable
      • zip.pl -- Access resource ZIP archives
      • c14n2.pl -- C14n2 canonical XML documents
      • prolog_wrap.pl -- Wrapping predicates
      • doc_files.pl -- Create stand-alone documentation files
      • xmldsig.pl -- XML Digital signature
      • prolog_autoload.pl -- Autoload all dependencies
      • prolog_history.pl -- Per-directory persistent commandline history
      • rlimit.pl
      • test_cover.pl -- Clause coverage analysis
      • explain.pl -- Describe Prolog Terms
      • readline.pl -- GNU readline interface
      • oset.pl -- Ordered set manipulation
      • yaml.pl -- Process YAML data
      • rdf_triple.pl -- Create triples from intermediate representation
      • pwp.pl -- Prolog Well-formed Pages
      • rdf_parser.pl
      • rewrite_term.pl
      • prolog_versions.pl -- Demand specific Prolog versions
      • xsdp_types.pl -- XML-Schema primitive types
 pengine_next(+NameOrID, +Options) is det
Asks pengine NameOrID for the next solution to a query started by pengine_ask/3. Defined options are:
chunk(+Count)
Modify the chunk-size to Count before asking the next set of solutions.

Remaining options are passed to pengine_send/3. The result of re-executing the current goal is returned to the caller's message queue in the form of event terms.

success(ID, Terms, Projection, Time, More)
See pengine_ask/3.
failure(ID)
ID is the id of the pengine that failed for lack of more solutions.
error(ID, Term)
ID is the id of the pengine throwing the exception. Term is the exception's error term.
output(ID, Term)
ID is the id of a pengine running the query that called pengine_output/1. Term is the term that was passed in the first argument of pengine_output/1 when it was called.
prompt(ID, Term)
ID is the id of the pengine that called pengine_input/2 and Term is the prompt.

Defined in terms of pengine_send/3, as follows:

pengine_next(ID, Options) :-
    pengine_send(ID, next, Options).