diff options
Diffstat (limited to 'src/main/java/com/iciql/SQLDialectH2.java')
| -rw-r--r-- | src/main/java/com/iciql/SQLDialectH2.java | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/src/main/java/com/iciql/SQLDialectH2.java b/src/main/java/com/iciql/SQLDialectH2.java new file mode 100644 index 0000000..6b3bab1 --- /dev/null +++ b/src/main/java/com/iciql/SQLDialectH2.java @@ -0,0 +1,135 @@ +/*
+ * Copyright 2011 James Moger.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.iciql;
+
+import com.iciql.TableDefinition.FieldDefinition;
+import com.iciql.TableDefinition.IndexDefinition;
+import com.iciql.util.StatementBuilder;
+
+/**
+ * H2 database dialect.
+ */
+public class SQLDialectH2 extends SQLDialectDefault {
+
+ /**
+ * CACHED tables are created by default. MEMORY tables are created upon
+ * request.
+ */
+ @Override
+ protected <T> String prepareCreateTable(TableDefinition<T> def) {
+ if (def.memoryTable) {
+ return "CREATE MEMORY TABLE IF NOT EXISTS";
+ } else {
+ return "CREATE CACHED TABLE IF NOT EXISTS";
+ }
+ }
+
+ @Override
+ protected <T> String prepareCreateView(TableDefinition<T> def) {
+ return "CREATE VIEW IF NOT EXISTS";
+ }
+
+ @Override
+ public <T> void prepareDropView(SQLStatement stat, TableDefinition<T> def) {
+ StatementBuilder buff = new StatementBuilder("DROP VIEW IF EXISTS "
+ + prepareTableName(def.schemaName, def.tableName));
+ stat.setSQL(buff.toString());
+ return;
+ }
+
+ @Override
+ protected boolean prepareColumnDefinition(StatementBuilder buff, String dataType,
+ boolean isAutoIncrement, boolean isPrimaryKey) {
+ String convertedType = convertSqlType(dataType);
+ boolean isIdentity = false;
+ if (isIntegerType(dataType)) {
+ if (isAutoIncrement && isPrimaryKey) {
+ buff.append("IDENTITY");
+ isIdentity = true;
+ } else if (isAutoIncrement) {
+ buff.append(convertedType);
+ buff.append(" AUTO_INCREMENT");
+ } else {
+ buff.append(convertedType);
+ }
+ } else {
+ buff.append(convertedType);
+ }
+ return isIdentity;
+ }
+
+ @Override
+ public void prepareCreateIndex(SQLStatement stat, String schema, String table, IndexDefinition index) {
+ StatementBuilder buff = new StatementBuilder();
+ buff.append("CREATE ");
+ switch (index.type) {
+ case STANDARD:
+ break;
+ case UNIQUE:
+ buff.append("UNIQUE ");
+ break;
+ case HASH:
+ buff.append("HASH ");
+ break;
+ case UNIQUE_HASH:
+ buff.append("UNIQUE HASH ");
+ break;
+ }
+ buff.append("INDEX IF NOT EXISTS ");
+ buff.append(index.indexName);
+ buff.append(" ON ");
+ buff.append(table);
+ buff.append("(");
+ for (String col : index.columnNames) {
+ buff.appendExceptFirst(", ");
+ buff.append(col);
+ }
+ buff.append(")");
+ stat.setSQL(buff.toString());
+ }
+
+ @Override
+ public <T> void prepareMerge(SQLStatement stat, String schemaName, String tableName,
+ TableDefinition<T> def, Object obj) {
+ StatementBuilder buff = new StatementBuilder("MERGE INTO ");
+ buff.append(prepareTableName(schemaName, tableName)).append(" (");
+ buff.resetCount();
+ for (FieldDefinition field : def.fields) {
+ buff.appendExceptFirst(", ");
+ buff.append(field.columnName);
+ }
+ buff.append(") KEY(");
+ buff.resetCount();
+ for (FieldDefinition field : def.fields) {
+ if (field.isPrimaryKey) {
+ buff.appendExceptFirst(", ");
+ buff.append(field.columnName);
+ }
+ }
+ buff.append(") ");
+ buff.resetCount();
+ buff.append("VALUES (");
+ for (FieldDefinition field : def.fields) {
+ buff.appendExceptFirst(", ");
+ buff.append('?');
+ Object value = def.getValue(obj, field);
+ stat.addParameter(value);
+ }
+ buff.append(')');
+ stat.setSQL(buff.toString());
+ }
+}
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