refs #703: route schema metadata through MyBatis

src/main/resources/mapper/SchemaMetadataMapper.xml

@@ -0,0 +1,103 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+    "https://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.cloudhandson.vpdbackoffice.mapper.SchemaMetadataMapper">
+  <select id="findTableComment" resultType="string">
+    SELECT comments
+    FROM all_tab_comments
+    WHERE owner = #{owner,jdbcType=VARCHAR}
+      AND table_name = #{tableName,jdbcType=VARCHAR}
+  </select>
+
+  <select id="findColumns"
+          resultType="com.cloudhandson.vpdbackoffice.domain.schemametadata.SchemaMetadataColumnRow">
+    SELECT c.column_name AS column_name,
+           CASE
+             WHEN c.data_type IN ('VARCHAR2', 'CHAR', 'NVARCHAR2', 'NCHAR')
+               THEN c.data_type || '(' || c.char_length || ')'
+             WHEN c.data_type = 'NUMBER' AND c.data_precision IS NOT NULL AND c.data_scale IS NOT NULL
+               THEN c.data_type || '(' || c.data_precision || ',' || c.data_scale || ')'
+             WHEN c.data_type = 'NUMBER' AND c.data_precision IS NOT NULL
+               THEN c.data_type || '(' || c.data_precision || ')'
+             ELSE c.data_type
+           END AS data_type,
+           c.nullable,
+           cc.comments
+    FROM all_tab_columns c
+    LEFT JOIN all_col_comments cc
+      ON cc.owner = c.owner
+     AND cc.table_name = c.table_name
+     AND cc.column_name = c.column_name
+    WHERE c.owner = #{owner,jdbcType=VARCHAR}
+      AND c.table_name = #{tableName,jdbcType=VARCHAR}
+    ORDER BY c.column_id
+  </select>
+
+  <select id="findAnnotations"
+          resultType="com.cloudhandson.vpdbackoffice.domain.schemametadata.SchemaMetadataAnnotationRow">
+    SELECT column_name,
+           annotation_name,
+           annotation_value
+    FROM all_annotations_usage
+    WHERE object_owner = #{owner,jdbcType=VARCHAR}
+      AND object_name = #{tableName,jdbcType=VARCHAR}
+      AND object_type = 'TABLE'
+    ORDER BY column_name NULLS FIRST, annotation_name, annotation_value
+  </select>
+
+  <select id="countColumn" resultType="int">
+    SELECT COUNT(*)
+    FROM all_tab_columns
+    WHERE owner = #{owner,jdbcType=VARCHAR}
+      AND table_name = #{tableName,jdbcType=VARCHAR}
+      AND column_name = #{columnName,jdbcType=VARCHAR}
+  </select>
+
+  <select id="countTableAnnotation" resultType="int">
+    SELECT COUNT(*)
+    FROM all_annotations_usage
+    WHERE object_owner = #{owner,jdbcType=VARCHAR}
+      AND object_name = #{tableName,jdbcType=VARCHAR}
+      AND object_type = 'TABLE'
+      AND annotation_name = #{annotationName,jdbcType=VARCHAR}
+      AND column_name IS NULL
+  </select>
+
+  <select id="countColumnAnnotation" resultType="int">
+    SELECT COUNT(*)
+    FROM all_annotations_usage
+    WHERE object_owner = #{owner,jdbcType=VARCHAR}
+      AND object_name = #{tableName,jdbcType=VARCHAR}
+      AND object_type = 'TABLE'
+      AND annotation_name = #{annotationName,jdbcType=VARCHAR}
+      AND column_name = #{columnName,jdbcType=VARCHAR}
+  </select>
+
+  <!-- Identifiers are server-side validated names. Oracle DDL comments require a literal. -->
+  <update id="updateTableComment">
+    COMMENT ON TABLE "${owner}"."${tableName}" IS ${commentLiteral}
+  </update>
+
+  <update id="updateColumnComment">
+    COMMENT ON COLUMN "${owner}"."${tableName}"."${columnName}" IS ${commentLiteral}
+  </update>
+
+  <update id="dropTableAnnotation">
+    ALTER TABLE "${owner}"."${tableName}" ANNOTATIONS (DROP "${annotationName}")
+  </update>
+
+  <update id="addTableAnnotation">
+    ALTER TABLE "${owner}"."${tableName}"
+      ANNOTATIONS (ADD "${annotationName}" ${annotationValueLiteral})
+  </update>
+
+  <update id="dropColumnAnnotation">
+    ALTER TABLE "${owner}"."${tableName}" MODIFY "${columnName}"
+      ANNOTATIONS (DROP "${annotationName}")
+  </update>
+
+  <update id="addColumnAnnotation">
+    ALTER TABLE "${owner}"."${tableName}" MODIFY "${columnName}"
+      ANNOTATIONS (ADD "${annotationName}" ${annotationValueLiteral})
+  </update>
+</mapper>