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Oceanbase code submission #1103

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Oceanbase code submission #1103

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55ce108
OceanBase基础代码提交
tmlx1990 Jan 11, 2024
4791c83
OceanBase基础代码提交
tmlx1990 Jan 12, 2024
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188 changes: 188 additions & 0 deletions ...lugins/chat2db-oceanbase/src/main/java/ai/chat2db/plugin/oceanbase/OceanBaseMetaData.java
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@@ -1,9 +1,197 @@
package ai.chat2db.plugin.oceanbase;

import ai.chat2db.plugin.oceanbase.builder.OceanBaseSqlBuilder;
import ai.chat2db.plugin.oceanbase.type.*;
import ai.chat2db.spi.MetaData;
import ai.chat2db.spi.SqlBuilder;
import ai.chat2db.spi.jdbc.DefaultMetaService;
import ai.chat2db.spi.model.*;
import ai.chat2db.spi.sql.SQLExecutor;
import jakarta.validation.constraints.NotEmpty;
import org.apache.commons.lang3.StringUtils;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.*;
import java.util.stream.Collectors;

public class OceanBaseMetaData extends DefaultMetaService implements MetaData {

@Override
public SqlBuilder getSqlBuilder() {
return new OceanBaseSqlBuilder();
}

@Override
public List<Table> tables(Connection connection, String databaseName, String schemaName, String tableName) {
String sql = "SHOW TABLE STATUS FROM "+ format(databaseName) + " where name = '" + tableName + "';";
return SQLExecutor.getInstance().execute(connection, sql, resultSet -> {
List<Table> tables = new ArrayList<>();
while (resultSet.next()) {
Table table = new Table();
table.setDatabaseName(databaseName);
table.setSchemaName(schemaName);
table.setName(resultSet.getString("NAME"));
table.setComment(resultSet.getString("COMMENT"));
tables.add(table);
}
return tables;
});
}

private static String SELECT_TABLE_COLUMNS = "SELECT * FROM information_schema.COLUMNS WHERE TABLE_SCHEMA = '%s' AND TABLE_NAME = '%s' order by ORDINAL_POSITION";
@Override
public List<TableColumn> columns(Connection connection, String databaseName, String schemaName, String tableName) {
String sql = String.format(SELECT_TABLE_COLUMNS, databaseName, tableName);
List<TableColumn> tableColumns = new ArrayList<>();
return SQLExecutor.getInstance().execute(connection, sql, resultSet -> {
while (resultSet.next()) {
TableColumn column = new TableColumn();
column.setDatabaseName(databaseName);
column.setTableName(tableName);
column.setOldName(resultSet.getString("COLUMN_NAME"));
column.setName(resultSet.getString("COLUMN_NAME"));
//column.setColumnType(resultSet.getString("COLUMN_TYPE"));
column.setColumnType(resultSet.getString("DATA_TYPE").toUpperCase());
//column.setDataType(resultSet.getInt("DATA_TYPE"));
column.setDefaultValue(resultSet.getString("COLUMN_DEFAULT"));
column.setAutoIncrement(resultSet.getString("EXTRA").contains("auto_increment"));
column.setComment(resultSet.getString("COLUMN_COMMENT"));
column.setPrimaryKey("PRI".equalsIgnoreCase(resultSet.getString("COLUMN_KEY")));
column.setNullable("YES".equalsIgnoreCase(resultSet.getString("IS_NULLABLE")) ? 1 : 0);
column.setOrdinalPosition(resultSet.getInt("ORDINAL_POSITION"));
column.setDecimalDigits(resultSet.getInt("NUMERIC_SCALE"));
column.setCharSetName(resultSet.getString("CHARACTER_SET_NAME"));
column.setCollationName(resultSet.getString("COLLATION_NAME"));
setColumnSize(column, resultSet.getString("COLUMN_TYPE"));
tableColumns.add(column);
}
return tableColumns;
});

}

private void setColumnSize(TableColumn column, String columnType) {
try {
if (columnType.contains("(")) {
String size = columnType.substring(columnType.indexOf("(") + 1, columnType.indexOf(")"));
if ("SET".equalsIgnoreCase(column.getColumnType()) || "ENUM".equalsIgnoreCase(column.getColumnType())) {
column.setValue(size);
} else {
if (size.contains(",")) {
String[] sizes = size.split(",");
if (StringUtils.isNotBlank(sizes[0])) {
column.setColumnSize(Integer.parseInt(sizes[0]));
}
if (StringUtils.isNotBlank(sizes[1])) {
column.setDecimalDigits(Integer.parseInt(sizes[1]));
}
} else {
column.setColumnSize(Integer.parseInt(size));
}
}
}
} catch (Exception e) {
}
}

@Override
public TableMeta getTableMeta(String databaseName, String schemaName, String tableName) {
return TableMeta.builder()
.columnTypes(OceanBaseColumnTypeEnum.getTypes())
.charsets(OceanBaseCharsetEnum.getCharsets())
.collations(OceanBaseCollationEnum.getCollations())
.indexTypes(OceanBaseIndexTypeEnum.getIndexTypes())
.defaultValues(OceanBaseDefaultValueEnum.getDefaultValues())
.build();
}

@Override
public String getMetaDataName(String... names) {
return Arrays.stream(names).filter(name -> StringUtils.isNotBlank(name)).map(name -> format(name)).collect(Collectors.joining("."));
}


@Override
public String tableDDL(Connection connection, @NotEmpty String databaseName, String schemaName,
@NotEmpty String tableName) {
String sql = "SHOW CREATE TABLE " + format(databaseName) + "."
+ format(tableName);
return SQLExecutor.getInstance().execute(connection, sql, resultSet -> {
if (resultSet.next()) {
return resultSet.getString("Create Table");
}
return null;
});
}

@Override
public List<TableIndex> indexes(Connection connection, String databaseName, String schemaName, String tableName) {
StringBuilder queryBuf = new StringBuilder("SHOW INDEX FROM ");
queryBuf.append(format(tableName));
queryBuf.append(".");
queryBuf.append(format(databaseName));
return SQLExecutor.getInstance().execute(connection, queryBuf.toString(), resultSet -> {
LinkedHashMap<String, TableIndex> map = new LinkedHashMap();
while (resultSet.next()) {
String keyName = resultSet.getString("Key_name");
TableIndex tableIndex = map.get(keyName);
if (tableIndex != null) {
List<TableIndexColumn> columnList = tableIndex.getColumnList();
columnList.add(getTableIndexColumn(resultSet));
columnList = columnList.stream().sorted(Comparator.comparing(TableIndexColumn::getOrdinalPosition))
.collect(Collectors.toList());
tableIndex.setColumnList(columnList);
} else {
TableIndex index = new TableIndex();
index.setDatabaseName(databaseName);
index.setSchemaName(schemaName);
index.setTableName(tableName);
index.setName(keyName);
index.setUnique(!resultSet.getBoolean("Non_unique"));
index.setType(resultSet.getString("Index_type"));
index.setComment(resultSet.getString("Index_comment"));
List<TableIndexColumn> tableIndexColumns = new ArrayList<>();
tableIndexColumns.add(getTableIndexColumn(resultSet));
index.setColumnList(tableIndexColumns);
if ("PRIMARY".equalsIgnoreCase(keyName)) {
index.setType(OceanBaseIndexTypeEnum.PRIMARY_KEY.getName());
} else if (index.getUnique()) {
index.setType(OceanBaseIndexTypeEnum.UNIQUE.getName());
} else if ("SPATIAL".equalsIgnoreCase(index.getType())) {
index.setType(OceanBaseIndexTypeEnum.SPATIAL.getName());
} else if ("FULLTEXT".equalsIgnoreCase(index.getType())) {
index.setType(OceanBaseIndexTypeEnum.FULLTEXT.getName());
} else {
index.setType(OceanBaseIndexTypeEnum.NORMAL.getName());
}
map.put(keyName, index);
}
}
return map.values().stream().collect(Collectors.toList());
});

}

private TableIndexColumn getTableIndexColumn(ResultSet resultSet) throws SQLException {
TableIndexColumn tableIndexColumn = new TableIndexColumn();
tableIndexColumn.setColumnName(resultSet.getString("Column_name"));
tableIndexColumn.setOrdinalPosition(resultSet.getShort("Seq_in_index"));
tableIndexColumn.setCollation(resultSet.getString("Collation"));
tableIndexColumn.setCardinality(resultSet.getLong("Cardinality"));
tableIndexColumn.setSubPart(resultSet.getLong("Sub_part"));
String collation = resultSet.getString("Collation");
if ("a".equalsIgnoreCase(collation)) {
tableIndexColumn.setAscOrDesc("ASC");
} else if ("d".equalsIgnoreCase(collation)) {
tableIndexColumn.setAscOrDesc("DESC");
}
return tableIndexColumn;
}

public static String format(String tableName) {
return "`" + tableName + "`";
}

}
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