Apple Newton Utilities Guide de l'utilisateur télécharger pdf (Page 476)

100

101

CHAPTER 11

Data Storage and Retrieval

11-44 Using Newton Data Storage Objects

This query ﬁnds entries containing the words "Bob", "Bobby", and so forth, but

not words such as

"JoeBob". Text queries are not case sensitive—even though the

original query spec is all lower case, this query ﬁnds entries such as

"Bob" or "BOB".

Because the

words slot contains an array, it can be used to search for multiple

string beginnings. For example, the following code fragment returns entries that

contain both of the string beginnings

"Bob" and "Apple". Thus, an entry

containing the strings

"Bobby" and "Applegate" would be included in the

results of the search, but an entry missing either of the word beginnings

"Bob" or

"Apple" is not included.

// find entries holding "bob" and "apple" word beginnings

// won’t find entries having only one of these beginnings

local myCurs := mySoup:Query({words: ["bob", "apple"]});

Because each element in the array is a string, each “word” to be matched can

actually contain multiple words and punctuation. For example, the following code

fragment returns entries that contain both of the string beginnings

"Bob" and

"Apple Computer, Inc.":

// find word beginnings "bob" and "Apple Computer, Inc."

local myCursor := mySoup:Query({words: ["bob",

"Apple Computer, Inc."]});

Note

The more unique the search string is, the more quickly a words

search proceeds. Thus,

words queries are slow for search words

that have only one or two characters in them.

◆

To search for entire strings, rather than string beginnings, the query spec must

include an

entireWords slot that holds the value true, as shown in the

following code fragment:

// return entries holding entire words "bob" and "Apple Computer"

local myCursor := mySoup:Query({words: ["bob", "Apple Computer"],

entireWords: true });

This query returns entries that contain both of the strings "Bob" and "Apple

Computer". Because the entireWords slot holds the value true, this query

does not match strings such as

"Apple Computer, Inc." or "Bobby".

Entries containing only one of the speciﬁed words are not included in the results of

the search.

To conduct a text search that is not constrained by word boundaries, add to your

query spec a

text slot containing a single string to be matched. For example, the

1 2 ... 471 472 473 474 475 476 477 478 479 480 481 ... 941 942

Commentaires sur ces manuels

Pas de commentaire

Apple Newton Utilities Guide de l'utilisateur Page 476

Commentaires sur ces manuels

Produits connexes et manuels pour Logiciel Apple Newton Utilities