public static String dumpToSeparateFile(File dir, String testId, String content) {
if (content == null || content.isEmpty()) {
throw new IllegalArgumentException("The content can not be empty(" + content + ").");
}
String filename = testId + ".asciidoc";
Writer writer = AsciiDocGenerator.getFW(new File(dir, "includes"), filename);
String title = "";
char firstChar = content.charAt(0);
if (firstChar == '.' || firstChar == '_') {
int pos = content.indexOf('\n');
if (pos != -1) {
title = content.substring(0, pos + 1);
content = content.substring(pos + 1);
}
}
try {
writer.write(content);
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return title + "include::includes/" + filename + "[]\n";
}
@Test
@Graph(
value = {"John friend Sara", "John friend Joe", "Sara friend Maria", "Joe friend Steve"},
autoIndexNodes = true)
public void intro_examples() throws Exception {
try (Transaction ignored = graphdb.beginTx()) {
Writer fw = AsciiDocGenerator.getFW(DOCS_TARGET, gen.get().getTitle());
data.get();
fw.append("\nImagine an example graph like the following one:\n\n");
fw.append(
AsciiDocGenerator.dumpToSeparateFileWithType(
new File(DOCS_TARGET),
"intro.graph",
AsciidocHelper.createGraphVizWithNodeId("Example Graph", graphdb(), "cypher-intro")));
fw.append(
"\nFor example, here is a query which finds a user called John and John's friends (though not "
+ "his direct friends) before returning both John and any friends-of-friends that are found.");
fw.append("\n\n");
String query = "MATCH (john {name: 'John'})-[:friend]->()-[:friend]->(fof) RETURN john, fof ";
fw.append(
AsciiDocGenerator.dumpToSeparateFileWithType(
new File(DOCS_TARGET), "intro.query", createCypherSnippet(query)));
fw.append("\nResulting in:\n\n");
fw.append(
AsciiDocGenerator.dumpToSeparateFileWithType(
new File(DOCS_TARGET),
"intro.result",
createQueryResultSnippet(engine.execute(query).dumpToString())));
fw.append(
"\nNext up we will add filtering to set more parts "
+ "in motion:\n\nWe take a list of user names "
+ "and find all nodes with names from this list, match their friends and return "
+ "only those followed users who have a +name+ property starting with +S+.");
query =
"MATCH (user)-[:friend]->(follower) WHERE "
+ "user.name IN ['Joe', 'John', 'Sara', 'Maria', 'Steve'] AND follower.name =~ 'S.*' "
+ "RETURN user, follower.name ";
fw.append("\n\n");
fw.append(
AsciiDocGenerator.dumpToSeparateFileWithType(
new File(DOCS_TARGET), "intro.query", createCypherSnippet(query)));
fw.append("\nResulting in:\n\n");
fw.append(
AsciiDocGenerator.dumpToSeparateFileWithType(
new File(DOCS_TARGET),
"intro.result",
createQueryResultSnippet(engine.execute(query).dumpToString())));
fw.close();
}
}
