Oracle® Spatial and Graph Map Visualization Developer's Guide 19c E94797-03 February 2021 Oracle Spatial and Graph Map Visualization Developer's Guide, 19c E94797-03 Copyright © 2001, 2021, Oracle and/or its affiliates. Primary Author: Lavanya Jayapalan Contributors: Chuck Murray, L.J. Qian, Jayant Sharma, Honglei Zhu This software and related documentation are provided under a license agreement containing restrictions on use and disclosure and are protected by intellectual property laws. Except as expressly permitted in your license agreement or allowed by law, you may not use, copy, reproduce, translate, broadcast, modify, license, transmit, distribute, exhibit, perform, publish, or display any part, in any form, or by any means. Reverse engineering, disassembly, or decompilation of this software, unless required by law for interoperability, is prohibited. The information contained herein is subject to change without notice and is not warranted to be error-free. If you find any errors, please report them to us in writing. If this is software or related documentation that is delivered to the U.S. Government or anyone licensing it on behalf of the U.S. Government, then the following notice is applicable: U.S. GOVERNMENT END USERS: Oracle programs (including any operating system, integrated software, any programs embedded, installed or activated on delivered hardware, and modifications of such programs) and Oracle computer documentation or other Oracle data delivered to or accessed by U.S. Government end users are "commercial computer software" or "commercial computer software documentation" pursuant to the applicable Federal Acquisition Regulation and agency-specific supplemental regulations. As such, the use, reproduction, duplication, release, display, disclosure, modification, preparation of derivative works, and/or adaptation of i) Oracle programs (including any operating system, integrated software, any programs embedded, installed or activated on delivered hardware, and modifications of such programs), ii) Oracle computer documentation and/or iii) other Oracle data, is subject to the rights and limitations specified in the license contained in the applicable contract. The terms governing the U.S. Government’s use of Oracle cloud services are defined by the applicable contract for such services. No other rights are granted to the U.S. Government. This software or hardware is developed for general use in a variety of information management applications. It is not developed or intended for use in any inherently dangerous applications, including applications that may create a risk of personal injury. If you use this software or hardware in dangerous applications, then you shall be responsible to take all appropriate fail-safe, backup, redundancy, and other measures to ensure its safe use. Oracle Corporation and its affiliates disclaim any liability for any damages caused by use of this software or hardware in dangerous applications. Oracle and Java are registered trademarks of Oracle and/or its affiliates. Other names may be trademarks of their respective owners. Intel and Intel Inside are trademarks or registered trademarks of Intel Corporation. All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International, Inc. AMD, Epyc, and the AMD logo are trademarks or registered trademarks of Advanced Micro Devices. UNIX is a registered trademark of The Open Group. This software or hardware and documentation may provide access to or information about content, products, and services from third parties. Oracle Corporation and its affiliates are not responsible for and expressly disclaim all warranties of any kind with respect to third-party content, products, and services unless otherwise set forth in an applicable agreement between you and Oracle. Oracle Corporation and its affiliates will not be responsible for any loss, costs, or damages incurred due to your access to or use of third-party content, products, or services, except as set forth in an applicable agreement between you and Oracle. Contents Preface Audience xvi Documentation Accessibility xvi Related Documentation xvi Acknowledgments xvii Conventions xvii 1 Introduction to the Map Visualization Component 19.3 1.1 Overview of the Map Visualization Component 1-2 1.1.1 Map Visualization Component Architecture 1-3 1.2 Getting Started with the Map Visualization Component 1-3 1.3 Prerequisite Software for the Map Visualization Component 1-4 1.4 Deploying MapViewer-Based Applications with the Map Visualization Component 1-4 1.5 Administering the Map Visualization Component 1-4 1.5.1 Logging in to the Map Visualization Component Administration Page 1-5 1.5.2 Configuring the Map Visualization Component 1-5 1.5.2.1 Specifying Logging Information 1-12 1.5.2.2 Specifying Map File Storage and Life Cycle Information 1-13 1.5.2.3 Specifying a Web Proxy 1-14 1.5.2.4 Specifying Global Map Configuration Options 1-14 1.5.2.5 Customizing the Spatial Data Cache 1-16 1.5.2.6 Specifying the Security Configuration 1-16 1.5.2.7 Registering a Custom Spatial Provider 1-18 1.5.2.8 Registering Custom Nonspatial Data Providers 1-18 1.5.2.9 Customizing SRS Mapping 1-19 1.5.2.10 Customizing WMS GetCapabilities Responses 1-19 1.5.2.11 Customizing WMTS GetCapabilities Responses 1-20 1.5.2.12 Configuring the Map Tile Server for Oracle Maps 1-22 1.5.2.13 Defining Permanent Map Data Sources 1-22 1.5.2.14 Configuring and Securing the Map Data Server for the HTML5 API 1-24 iii 1.5.3 Performing Map Visualization Component Administrative Tasks 1-26 1.6 Oracle Real Application Clusters and the Map Visualization Component 1-27 1.6.1 Creating a Container Oracle RAC Data Source for the Map Visualization Component Server 1-27 1.6.1.1 Create a Container Oracle RAC Data Source 1-28 1.6.1.2 Create a Map Visualization Component Data Source Using a Container Data Source 1-32 1.6.2 Creating a Map Visualization Component Data Source Using the Oracle RAC Service Name 1-33 1.6.3 Restarting the Map Visualization Component 1-33 1.7 High Availability and the Map Visualization Component (WebLogic Server Only) 1-34 1.7.1 Deploying the Map Visualization Component on a Middle-Tier Cluster 1-34 1.8 Secure Map Rendering 1-35 1.8.1 How Secure Map Rendering Works 1-36 1.8.2 Getting the User Name from a Cookie 1-38 1.8.3 Authenticating Users: Options and Demo 1-38 1.9 Map Visualization Component Demos and Tutorials 1-39 2 Map Visualization Concepts 2.1 Overview of the Map Visualization Component 2-2 2.2 Styles 2-2 2.2.1 Scaling the Size of a Style (Scalable Styles) 2-4 2.2.2 Specifying a Label Style for a Bucket 2-5 2.2.3 Orienting Text Labels and Markers 2-7 2.2.3.1 Controlling Text Style Orientation 2-7 2.2.3.2 Controlling Marker Orientation 2-8 2.2.4 Making a Text Style Sticky 2-9 2.2.5 Getting a Sample Image of Any Style 2-9 2.2.6 Allowing a Text Style to Overlap or Be Overlapped 2-11 2.3 Themes 2-11 2.3.1 Predefined Themes 2-12 2.3.1.1 Styling Rules in Predefined Spatial Geometry Themes 2-13 2.3.1.2 How the Map Visualization Component Formulates a SQL Query for a Styling Rule 2-15 2.3.1.3 Styling Rules with Binding Parameters 2-16 2.3.1.4 Applying Multiple Rendering Styles in a Single Styling Rule 2-17 2.3.1.5 Using Multiple Rendering Styles with Scale Ranges 2-18 2.3.1.6 Caching of Predefined Themes 2-18 2.3.1.7 Feature Labels and Internationalization 2-19 2.3.1.8 Primary and Secondary Labels for Linear Features 2-22 2.3.2 JDBC Themes 2-23 iv 2.3.2.1 Defining a Point JDBC Theme Based on Two Columns 2-24 2.3.2.2 Storing Complex JDBC Themes in the Database 2-25 2.3.3 Image Themes 2-26 2.3.3.1 Creating Predefined Image Themes 2-28 2.3.4 GeoRaster Themes 2-29 2.3.4.1 Creating Predefined GeoRaster Themes 2-31 2.3.4.2 Using Bitmap Masks with GeoRaster Themes 2-36 2.3.4.3 Reprojection of GeoRaster Themes 2-37 2.3.4.4 Virtual Mosaic Themes 2-37 2.3.5 Network Themes 2-39 2.3.5.1 Creating Predefined Network Themes 2-41 2.3.5.2 Using the Map Visualization Component for Network Analysis 2-42 2.3.6 Topology Themes 2-43 2.3.6.1 Creating Predefined Topology Themes 2-45 2.3.7 WFS Themes 2-46 2.3.7.1 Creating Predefined WFS Themes 2-49 2.3.8 WMTS Themes 2-50 2.3.8.1 How the tile_resizing_option Attribute Works 2-54 2.3.8.2 snap_to_tile_scale and tile_resizing_option Attribute Usage Guidelines 2-55 2.3.8.3 Creating Predefined WMTS Themes 2-56 2.3.9 Custom Geometry Themes 2-57 2.3.10 Annotation Text Themes 2-62 2.3.11 LRS (Linear Referencing System) Themes 2-67 2.3.12 Thematic Mapping 2-69 2.3.12.1 Thematic Mapping Using External Attribute Data 2-75 2.3.13 Attributes Affecting Theme Appearance 2-78 2.4 Maps 2-79 2.4.1 Map Size and Scale 2-80 2.4.2 Map Legend 2-82 2.5 Data Sources 2-86 2.5.1 Catalog Data Sources 2-87 2.5.1.1 Export the Necessary Metadata from an Oracle Database 2-87 2.5.1.2 Export the Necessary Spatial Tables 2-88 2.5.1.3 Edit the Map Visualization Component Configuration File to Add the Catalog Data Source 2-89 2.5.1.4 Restart the Map Visualization Component Server 2-89 2.6 How a Map Is Generated 2-89 2.7 Cross-Schema Map Requests 2-91 2.8 Workspace Manager Support in the Map Visualization Component 2-93 2.9 Map Visualization Component Metadata Views 2-94 2.9.1 xxx_SDO_STYLES Views 2-96 v 2.9.2 xxx_SDO_THEMES Views 2-98 2.9.3 xxx_SDO_MAPS Views 2-98 2.9.4 xxx_SDO_CACHED_MAPS Views 2-98 2.10 Oracle Maps 2-99 2.10.1 Overview of Oracle Maps 2-99 2.10.2 Architecture for Oracle Maps Applications 2-100 3 Map Visualization Servers 3.1 Map Visualization Component Map Data Server 3-1 3.1.1