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Implement getTables for JDBC4DatabaseMetaData

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김선우
2025-06-08 13:07:19 +09:00
parent a00fe6d358
commit 208c6963e0
5 changed files with 322 additions and 124 deletions
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12
bindings/java/src/main/java/tech/turso/core/LimboResultSet.java
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@@ -119,6 +119,18 @@ public final class LimboResultSet {
this.open = false;
}
@Nullable
public Object get(String columnName) throws SQLException {
final int columnsLength = this.columnNames.length;
for (int i = 0; i < columnsLength; i++) {
if (this.columnNames[i].equals(columnName)) {
return get(i + 1);
}
}
throw new SQLException("column name " + columnName + " not found");
}
// Note that columnIndex starts from 1
@Nullable
public Object get(int columnIndex) throws SQLException {

75
bindings/java/src/main/java/tech/turso/jdbc4/JDBC4DatabaseMetaData.java
View File

@@ -687,16 +687,85 @@ public final class JDBC4DatabaseMetaData implements DatabaseMetaData {
return null;
}
// TODO: make use of getSearchStringEscape
@Override
@SkipNullableCheck
public ResultSet getTables(
@Nullable String catalog,
@Nullable String schemaPattern,
String tableNamePattern,
@Nullable String[] types)
throws SQLException {
// TODO: after union is supported
return null;
// SQLite doesn't support catalogs or schemas — reject if non-empty values provided
if (catalog != null && !catalog.isEmpty()) {
return connection.prepareStatement("SELECT * FROM sqlite_schema WHERE 1=0").executeQuery();
}
if (schemaPattern != null && !schemaPattern.isEmpty()) {
return connection.prepareStatement("SELECT * FROM sqlite_schema WHERE 1=0").executeQuery();
}
// Start building query
StringBuilder sql = new StringBuilder(
"SELECT " +
"NULL AS TABLE_CAT, " +
"NULL AS TABLE_SCHEM, " +
"name AS TABLE_NAME, " +
"CASE type " +
" WHEN 'table' THEN 'TABLE' " +
" WHEN 'view' THEN 'VIEW' " +
" ELSE UPPER(type) " +
"END AS TABLE_TYPE, " +
"NULL AS REMARKS, " +
"NULL AS TYPE_CAT, " +
"NULL AS TYPE_SCHEM, " +
"NULL AS TYPE_NAME, " +
"NULL AS SELF_REFERENCING_COL_NAME, " +
"NULL AS REF_GENERATION " +
"FROM sqlite_schema " +
"WHERE 1=1"
);
// Apply type filtering if needed
if (types != null && types.length > 0) {
sql.append(" AND type IN (");
for (int i = 0; i < types.length; i++) {
if (i > 0) sql.append(", ");
sql.append("?");
}
sql.append(")");
}
// Apply table name pattern filtering
if (tableNamePattern != null) {
sql.append(" AND name LIKE ?");
}
// Comply with spec: sort by TABLE_TYPE, TABLE_CAT, TABLE_SCHEM, TABLE_NAME
sql.append(" ORDER BY TABLE_TYPE, TABLE_CAT, TABLE_SCHEM, TABLE_NAME");
// Prepare and bind statement
PreparedStatement stmt = connection.prepareStatement(sql.toString());
int paramIndex = 1;
if (types != null && types.length > 0) {
for (String type : types) {
String sqliteType;
if ("TABLE".equalsIgnoreCase(type)) {
sqliteType = "table";
} else if ("VIEW".equalsIgnoreCase(type)) {
sqliteType = "view";
} else {
sqliteType = type.toLowerCase();
}
stmt.setString(paramIndex++, sqliteType);
}
}
if (tableNamePattern != null) {
stmt.setString(paramIndex, tableNamePattern);
}
return stmt.executeQuery();
}
@Override

8
bindings/java/src/main/java/tech/turso/jdbc4/JDBC4ResultSet.java
View File

@@ -190,8 +190,12 @@ public final class JDBC4ResultSet implements ResultSet, ResultSetMetaData {
@Override
public String getString(String columnLabel) throws SQLException {
// TODO
return "";
final Object result = this.resultSet.get(columnLabel);
if (result == null) {
return "";
}
return wrapTypeConversion(() -> (String) result);
}
@Override

240
bindings/java/src/main/java/tech/turso/jdbc4/JDBC4ResultSetMetadata.java
View File

@@ -2,150 +2,152 @@ package tech.turso.jdbc4;
import java.sql.ResultSetMetaData;
import java.sql.SQLException;
import tech.turso.annotations.SkipNullableCheck;
public class JDBC4ResultSetMetadata implements ResultSetMetaData {
private final JDBC4ResultSet resultSet;
private final JDBC4ResultSet resultSet;
public JDBC4ResultSetMetadata(JDBC4ResultSet resultSet) {
this.resultSet = resultSet;
}
public JDBC4ResultSetMetadata(JDBC4ResultSet resultSet) {
this.resultSet = resultSet;
}
@Override
public int getColumnCount() throws SQLException {
// TODO
return 0;
}
@Override
public int getColumnCount() throws SQLException {
// TODO
return 0;
}
@Override
public boolean isAutoIncrement(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isAutoIncrement(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isCaseSensitive(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isCaseSensitive(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isSearchable(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isSearchable(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isCurrency(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isCurrency(int column) throws SQLException {
// TODO
return false;
}
@Override
public int isNullable(int column) throws SQLException {
// TODO
return 0;
}
@Override
public int isNullable(int column) throws SQLException {
// TODO
return 0;
}
@Override
public boolean isSigned(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isSigned(int column) throws SQLException {
// TODO
return false;
}
@Override
public int getColumnDisplaySize(int column) throws SQLException {
// TODO
return 0;
}
@Override
public int getColumnDisplaySize(int column) throws SQLException {
// TODO
return 0;
}
@Override
public String getColumnLabel(int column) throws SQLException {
// TODO
return "";
}
@Override
public String getColumnLabel(int column) throws SQLException {
// TODO
return "";
}
@Override
public String getColumnName(int column) throws SQLException {
// TODO
return "";
}
@Override
public String getColumnName(int column) throws SQLException {
// TODO
return "";
}
@Override
public String getSchemaName(int column) throws SQLException {
// TODO
return "";
}
@Override
public String getSchemaName(int column) throws SQLException {
// TODO
return "";
}
@Override
public int getPrecision(int column) throws SQLException {
// TODO
return 0;
}
@Override
public int getPrecision(int column) throws SQLException {
// TODO
return 0;
}
@Override
public int getScale(int column) throws SQLException {
// TODO
return 0;
}
@Override
public int getScale(int column) throws SQLException {
// TODO
return 0;
}
@Override
public String getTableName(int column) throws SQLException {
// TODO
return "";
}
@Override
public String getTableName(int column) throws SQLException {
// TODO
return "";
}
@Override
public String getCatalogName(int column) throws SQLException {
// TODO
return "";
}
@Override
public String getCatalogName(int column) throws SQLException {
// TODO
return "";
}
@Override
public int getColumnType(int column) throws SQLException {
// TODO
return 0;
}
@Override
public int getColumnType(int column) throws SQLException {
// TODO
return 0;
}
@Override
public String getColumnTypeName(int column) throws SQLException {
// TODO
return "";
}
@Override
public String getColumnTypeName(int column) throws SQLException {
// TODO
return "";
}
@Override
public boolean isReadOnly(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isReadOnly(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isWritable(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isWritable(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isDefinitelyWritable(int column) throws SQLException {
// TODO
return false;
}
@Override
public boolean isDefinitelyWritable(int column) throws SQLException {
// TODO
return false;
}
@Override
public String getColumnClassName(int column) throws SQLException {
// TODO
return "";
}
@Override
public String getColumnClassName(int column) throws SQLException {
// TODO
return "";
}
@Override
public <T> T unwrap(Class<T> iface) throws SQLException {
// TODO
return null;
}
@Override
@SkipNullableCheck
public <T> T unwrap(Class<T> iface) throws SQLException {
// TODO
return null;
}
@Override
public boolean isWrapperFor(Class<?> iface) throws SQLException {
// TODO
return false;
}
@Override
public boolean isWrapperFor(Class<?> iface) throws SQLException {
// TODO
return false;
}
}