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[Geoapi-devel] [jira] (GEO-236) Leave SimpleFeature interface to implementors choice
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From: Martin D. (JIRA) <ji...@co...> - 2014-05-21 20:34:16
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0" /> <base href="https://jira.codehaus.org" /> <title>Message Title</title> </head> <body class="jira" style="color: #333; font-family: Arial, sans-serif; font-size: 14px; line-height: 1.429"> <table id="background-table" cellpadding="0" cellspacing="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; background-color: #f5f5f5; border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> <!-- header here --> <tr> <td id="header-pattern-container" style="padding: 0px; border-collapse: collapse; padding: 10px 20px"> <table id="header-pattern" cellspacing="0" cellpadding="0" border="0" style="border-collapse: collapse; mso-table-lspace: 0pt; 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padding: 0 20px"> <table id="email-content-table" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; border-spacing: 0; border-collapse: separate"> <tr> <!-- there needs to be content in the cell for it to render in some clients --> <td class="email-content-rounded-top mobile-expand" style="padding: 0px; border-collapse: collapse; color: #fff; padding: 0 15px 0 16px; height: 15px; background-color: #fff; border-left: 1px solid #ccc; border-top: 1px solid #ccc; border-right: 1px solid #ccc; border-bottom: 0; border-top-right-radius: 5px; border-top-left-radius: 5px; height: 10px; line-height: 10px; padding: 0 15px 0 16px; mso-line-height-rule: exactly"> </td> </tr> <tr> <td class="email-content-main mobile-expand " style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #fff"> <table class="page-title-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> <tr> <td class="page-title-pattern-first-line " style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; padding-top: 10px"> <a href="https://jira.codehaus.org/browse/GEO" style="color: #3b73af; text-decoration: none">GeoAPI</a> / <a href="https://jira.codehaus.org/browse/GEO-236" style="color: #3b73af; text-decoration: none"><img src="https://jira.codehaus.org/images/icons/issuetypes/subtask_alternate.png" height="16" width="16" border="0" align="absmiddle" alt="Sub-task" style="vertical-align: text-bottom" /></a> <a href="https://jira.codehaus.org/browse/GEO-236" style="color: #3b73af; text-decoration: none">GEO-236</a> </td> </tr> <tr> <td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://jira.codehaus.org/browse/GEO-236" style="color: #3b73af; text-decoration: none">Leave SimpleFeature interface to implementors choice</a> </span> </td> </tr> </table> </td> </tr> <tr> <td class="email-content-main mobile-expand wrapper-special-margin" style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #fff; padding-top: 10px; padding-bottom: 5px"> <table class="keyvalue-table" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> <tr> <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0"> Issue Type: </th> <td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="https://jira.codehaus.org/images/icons/issuetypes/subtask_alternate.png" height="16" width="16" border="0" align="absmiddle" alt="Sub-task" style="vertical-align: text-bottom" /> Sub-task </td> </tr> <tr> <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0"> Assignee: </th> <td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="desruisseaux" id="email_desruisseaux" href="https://jira.codehaus.org/secure/ViewProfile.jspa?name=desruisseaux" style="color:#005500;; color: #3b73af; text-decoration: none">Martin Desruisseaux</a> </td> </tr> <tr> <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0"> Components: </th> <td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> feature </td> </tr> <tr> <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0"> Created: </th> <td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> 21/May/14 3:33 PM </td> </tr> <tr> <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0"> Priority: </th> <td class="has-icon" style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <img src="https://jira.codehaus.org/images/icons/priorities/major.png" height="16" width="16" border="0" align="absmiddle" alt="Major" style="vertical-align: text-bottom" /> Major </td> </tr> <tr> <th style="color: #707070; font: normal 14px/20px Arial, sans-serif; text-align: left; vertical-align: top; padding: 2px 0"> Reporter: </th> <td style="padding: 0px; border-collapse: collapse; font: normal 14px/20px Arial, sans-serif; padding: 2px 0 2px 5px; vertical-align: top"> <a class="user-hover" rel="desruisseaux" id="email_desruisseaux" href="https://jira.codehaus.org/secure/ViewProfile.jspa?name=desruisseaux" style="color:#005500;; color: #3b73af; text-decoration: none">Martin Desruisseaux</a> </td> </tr> </table> </td> </tr> <tr> <td class="email-content-main mobile-expand issue-description-container" style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #fff; padding-top: 5px; padding-bottom: 10px"> <table class="text-paragraph-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 2px"> <tr> <td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 10px 0"> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The <tt>org.opengis.feature.simple</tt> package in GeoAPI-pending contains two interfaces: <tt>SimpleFeature</tt> and <tt>SimpleFeatureType</tt>. The javadoc defines simple features as below:</p> <ul> <li> made up of only non-complex attributes, no associations </li> <li> attributes are of multiplicity 1 </li> <li> attributes are ordered </li> <li> attribute names are unqualified (<tt>namespaceURI</tt> == null) </li> </ul> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">The order and multiplicity restrictions on simple feature make attribute values accessible via an index, in a way similar to JDBC interfaces. For example the same attribute value could be obtained in two way:</p> <ul> <li> <tt>getAttribute(String name)</tt> </li> <li> <tt>getAttribute(int index)</tt> </li> </ul> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">This is significant on a performance point of view, since access by index are often faster.</p> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">However there is different opinions about what can be in a simple feature:</p> <ul> <li> Association? From a Java perspective, this is basically a value of type <tt>Feature</tt>. </li> <li> Multiplicity greater than 1 as collections? (similar to array types in JDBC). </li> <li> Unqualified names: is it a necessary restriction? </li> </ul> <p style="margin-top:0;margin-bottom:10px;; margin: 10px 0 0 0">Applying the "in case of doubt, leave it out" principle, a safe approach may be to omit the simple feature interfaces for now, leave them to implementors, and see if a consensus emerge in various implementations.</p> </td> </tr> </table> </td> </tr> <tr> <td class="email-content-main mobile-expand " style="padding: 0px; border-collapse: collapse; border-left: 1px solid #ccc; border-right: 1px solid #ccc; border-top: 0; border-bottom: 0; padding: 0 15px 0 16px; background-color: #fff"> <table id="actions-pattern" cellspacing="0" cellpadding="0" border="0" width="100%" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 1px"> <tr> <td id="actions-pattern-container" valign="middle" style="padding: 0px; border-collapse: collapse; padding: 10px 0 10px 24px; vertical-align: middle; padding-left: 0"> <table align="left" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> <tr> <td class="actions-pattern-action-icon-container" style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 0px; vertical-align: middle"> <a href="https://jira.codehaus.org/browse/GEO-236#add-comment" target="_blank" title="{getText($action.text)}" style="color: #3b73af; text-decoration: none"> <img class="actions-pattern-action-icon-image" src="https://jira.codehaus.org/images/mail/comment-icon.png" alt="Add Comment" title="{Add Comment}-icon" height="16" width="16" border="0" style="vertical-align: middle" /> </a> </td> <td class="actions-pattern-action-text-container" style="padding: 0px; border-collapse: collapse; font-family: Arial, sans-serif; font-size: 14px; line-height: 20px; mso-line-height-rule: exactly; mso-text-raise: 4px; padding-left: 5px"> <a href="https://jira.codehaus.org/browse/GEO-236#add-comment" target="_blank" title="Add Comment" style="color: #3b73af; text-decoration: none">Add Comment</a> </td> </tr> </table> </td> </tr> </table> </td> </tr> <!-- there needs to be content in the cell for it to render in some clients --> <tr> <td class="email-content-rounded-bottom mobile-expand" style="padding: 0px; border-collapse: collapse; color: #fff; padding: 0 15px 0 16px; height: 5px; line-height: 5px; background-color: #fff; border-top: 0; border-left: 1px solid #ccc; border-bottom: 1px solid #ccc; border-right: 1px solid #ccc; border-bottom-right-radius: 5px; border-bottom-left-radius: 5px; mso-line-height-rule: exactly"> </td> </tr> </table> </td> </tr> <tr> <td id="footer-pattern" style="padding: 0px; border-collapse: collapse; padding: 12px 20px"> <table id="footer-pattern-container" cellspacing="0" cellpadding="0" border="0" style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> <tr> <td id="footer-pattern-text" class="mobile-resize-text" width="100%" style="padding: 0px; border-collapse: collapse; color: #999; font-size: 12px; line-height: 18px; font-family: Arial, sans-serif; mso-line-height-rule: exactly; mso-text-raise: 2px"> This message was sent by Atlassian JIRA <span id="footer-build-information">(v6.1.6#6162-<span title="7af547ce7c84dbb7c1e345a65437ed7b85efffa2" data-commit-id="7af547ce7c84dbb7c1e345a65437ed7b85efffa2}">sha1:7af547c</span>)</span> </td> <td id="footer-pattern-logo-desktop-container" valign="top" style="padding: 0px; border-collapse: collapse; padding-left: 20px; vertical-align: top"> <table style="border-collapse: collapse; mso-table-lspace: 0pt; mso-table-rspace: 0pt"> <tr> <td id="footer-pattern-logo-desktop-padding" style="padding: 0px; border-collapse: collapse; padding-top: 3px"> <img id="footer-pattern-logo-desktop" src="https://jira.codehaus.org/images/mail/footer-desktop-logo.png" alt="Atlassian logo" title="Atlassian logo" width="169" height="36" class="image_fix" /> </td> </tr> </table> </td> </tr> </table> </td> </tr> </table> </body> </html> |
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