Examples with DefaultExpander org.drools.drl.parser.lang.dsl.DefaultExpander used on opensource projects

Example 11 with DefaultExpander

use of org.drools.drl.parser.lang.dsl.DefaultExpander in project drools by kiegroup.

the class KnowledgeBuilderImpl method dslrReaderToPackageDescr.

private PackageDescr dslrReaderToPackageDescr(Resource resource, Reader dslrReader) throws DroolsParserException {
    boolean hasErrors;
    PackageDescr pkg;
    DrlParser parser = new DrlParser(configuration.getLanguageLevel());
    DefaultExpander expander = getDslExpander();
    try {
        try {
            if (expander == null) {
                expander = new DefaultExpander();
            }
            String str = expander.expand(dslrReader);
            if (expander.hasErrors()) {
                for (ExpanderException error : expander.getErrors()) {
                    error.setResource(resource);
                    addBuilderResult(error);
                }
            }
            pkg = parser.parse(resource, str);
            this.results.addAll(parser.getErrors());
            hasErrors = parser.hasErrors();
        } finally {
            if (dslrReader != null) {
                dslrReader.close();
            }
        }
    } catch (IOException ex) {
        throw new UncheckedIOException(ex);
    }
    return hasErrors ? null : pkg;
}

Example 12 with DefaultExpander

use of org.drools.drl.parser.lang.dsl.DefaultExpander in project drools by kiegroup.

the class DrlParserTest method testExpandDRLUsingInjectedExpander.

@Test
public void testExpandDRLUsingInjectedExpander() throws Exception {
    String dsl = "[condition]Something=Something()" + NL + "[then]another=another();";
    String drl = "rule 'foo' " + NL + " when " + NL + " Something " + NL + " then " + NL + " another " + NL + "end";
    DefaultExpanderResolver resolver = new DefaultExpanderResolver(new StringReader(dsl));
    final DSLMappingFile file = new DSLTokenizedMappingFile();
    if (file.parseAndLoad(new StringReader(dsl))) {
        final Expander expander = new DefaultExpander();
        expander.addDSLMapping(file.getMapping());
        resolver.addExpander("*", expander);
    } else {
        throw new RuntimeException("Error parsing and loading DSL file." + file.getErrors());
    }
    DrlParser parser = new DrlParser(LanguageLevelOption.DRL5);
    String result = parser.getExpandedDRL(drl, resolver);
    Assertions.assertThat("rule 'foo' " + NL + " when " + NL + " Something() " + NL + " then " + NL + " another(); " + NL + "end").isEqualToIgnoringWhitespace(result);
}

Example 13 with DefaultExpander

use of org.drools.drl.parser.lang.dsl.DefaultExpander in project drools by kiegroup.

the class ANTLRDSLTest method testMe.

@Test
public void testMe() throws Exception {
    DSLTokenizedMappingFile tokenizedFile = null;
    final String filename = "test_antlr.dsl";
    final Reader reader = new InputStreamReader(this.getClass().getResourceAsStream(filename));
    tokenizedFile = new DSLTokenizedMappingFile();
    tokenizedFile.parseAndLoad(reader);
    reader.close();
    for (Iterator it = tokenizedFile.getMapping().getEntries().iterator(); it.hasNext(); ) {
        DSLMappingEntry entry = (DSLMappingEntry) it.next();
    // System.out.println("ENTRY: " + entry.getKeyPattern() + "   :::::   " + entry.getValuePattern());
    }
    DefaultExpander ex = new DefaultExpander();
    ex.addDSLMapping(tokenizedFile.getMapping());
    System.err.println(ex.expand("rule 'x' \n when \n address is present where name is \"foo\" and age is \"32\" \n then \n end"));
}

Example 14 with DefaultExpander

use of org.drools.drl.parser.lang.dsl.DefaultExpander in project drools by kiegroup.

the class DSLMappingFileTest method testNoRHS.

/**
 * Right now this test fails because there is no RHS for the rule. It connects the "then" and "end" to "thenend".
 */
@Test
public void testNoRHS() {
    String file = "[then]TEST=System.out.println(\"DO_SOMETHING\");" + NL + "" + "[when]code {code1} occurs and sum of all digit not equal \\( {code2} \\+ {code3} \\)=AAAA( cd1 == {code1}, cd2 != ( {code2} + {code3} ))" + NL + "" + "[when]code {code1} occurs=BBBB" + NL + "";
    try {
        final Reader reader = new StringReader(file);
        this.file = new DSLTokenizedMappingFile();
        final boolean parsingResult = this.file.parseAndLoad(reader);
        reader.close();
        assertTrue(this.file.getErrors().toString(), parsingResult);
        assertTrue(this.file.getErrors().isEmpty());
        final String LHS = "code 1041 occurs and sum of all digit not equal ( 1034 + 1035 )";
        final String rule = "rule \"x\"" + NL + "when" + NL + "" + LHS + "" + NL + "then" + NL + "end";
        DefaultExpander de = new DefaultExpander();
        de.addDSLMapping(this.file.getMapping());
        final String ruleAfterExpansion = de.expand(rule);
        final String expected = "rule \"x\"" + NL + "when" + NL + "AAAA( cd1 == 1041, cd2 != ( 1034 + 1035 ))" + NL + "then" + NL + "end";
        assertEquals(expected, ruleAfterExpansion);
    } catch (final IOException e) {
        e.printStackTrace();
        fail("Should not raise exception ");
    }
}

Example 15 with DefaultExpander

use of org.drools.drl.parser.lang.dsl.DefaultExpander in project drools by kiegroup.

the class DSLMappingFileTest method testParseFileWithEscapes.

@Test
public void testParseFileWithEscapes() {
    String file = "[then]TEST=System.out.println(\"DO_SOMETHING\");" + NL + "" + "[when]code {code1} occurs and sum of all digit not equal \\( {code2} \\+ {code3} \\)=AAAA( cd1 == {code1}, cd2 != ( {code2} + {code3} ))" + NL + "" + "[when]code {code1} occurs=BBBB" + NL + "";
    try {
        final Reader reader = new StringReader(file);
        this.file = new DSLTokenizedMappingFile();
        final boolean parsingResult = this.file.parseAndLoad(reader);
        reader.close();
        assertTrue(this.file.getErrors().toString(), parsingResult);
        assertTrue(this.file.getErrors().isEmpty());
        final String LHS = "code 1041 occurs and sum of all digit not equal ( 1034 + 1035 )";
        final String rule = "rule \"x\"" + NL + "when" + NL + "" + LHS + "" + NL + "then" + NL + "TEST" + NL + "end";
        DefaultExpander de = new DefaultExpander();
        de.addDSLMapping(this.file.getMapping());
        final String ruleAfterExpansion = de.expand(rule);
        final String expected = "rule \"x\"" + NL + "when" + NL + "AAAA( cd1 == 1041, cd2 != ( 1034 + 1035 ))" + NL + "then" + NL + "System.out.println(\"DO_SOMETHING\");" + NL + "end";
        assertEquals(expected, ruleAfterExpansion);
    } catch (final IOException e) {
        e.printStackTrace();
        fail("Should not raise exception ");
    }
}