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JDBC Type 4 driver for MySQL
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/*
* Copyright (c) 2016, 2021, Oracle and/or its affiliates.
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 2.0, as published by the
* Free Software Foundation.
*
* This program is also distributed with certain software (including but not
* limited to OpenSSL) that is licensed under separate terms, as designated in a
* particular file or component or in included license documentation. The
* authors of MySQL hereby grant you an additional permission to link the
* program and your derivative works with the separately licensed software that
* they have included with MySQL.
*
* Without limiting anything contained in the foregoing, this file, which is
* part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
* version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0,
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.mysql.cj.xdevapi;
import com.mysql.cj.CharsetMapping;
import com.mysql.cj.MysqlType;
import com.mysql.cj.result.Field;
public class ColumnImpl implements Column {
private Field field;
/**
* Constructor.
*
* @param f
* {@link Field} object
*/
public ColumnImpl(Field f) {
this.field = f;
}
public String getSchemaName() {
return this.field.getDatabaseName();
}
public String getTableName() {
return this.field.getOriginalTableName();
}
public String getTableLabel() {
return this.field.getTableName();
}
public String getColumnName() {
return this.field.getOriginalName();
}
public String getColumnLabel() {
return this.field.getName();
}
public Type getType() {
switch (this.field.getMysqlType()) {
case BIT:
return Type.BIT;
case BIGINT:
int len = (int) this.field.getLength();
if (len < 5) {
return Type.TINYINT;
} else if (len < 7) {
return Type.SMALLINT;
} else if (len < 10) {
return Type.MEDIUMINT;
} else if (len < 12) {
return Type.INT;
} else if (len < 21) {
return Type.BIGINT;
}
throw new IllegalArgumentException("Unknown field length `" + this.field.getLength() + "` for signed int");
case BIGINT_UNSIGNED:
len = (int) this.field.getLength();
if (len < 4) {
return Type.TINYINT;
} else if (len < 6) {
return Type.SMALLINT;
} else if (len < 9) {
return Type.MEDIUMINT;
} else if (len < 11) {
return Type.INT;
} else if (len < 21) {
return Type.BIGINT;
}
throw new IllegalArgumentException("Unknown field length `" + this.field.getLength() + "` for unsigned int");
case FLOAT:
case FLOAT_UNSIGNED:
return Type.FLOAT;
case DECIMAL:
case DECIMAL_UNSIGNED:
return Type.DECIMAL;
case DOUBLE:
case DOUBLE_UNSIGNED:
return Type.DOUBLE;
case CHAR:
case VARCHAR:
return Type.STRING;
case JSON:
return Type.JSON;
case VARBINARY:
return Type.BYTES;
case TIME:
return Type.TIME;
case DATETIME:
len = (int) this.field.getLength();
if (len == 10) {
return Type.DATE;
} else if (len > 18 && len < 27) {
return Type.DATETIME;
}
throw new IllegalArgumentException("Unknown field length `" + this.field.getLength() + "` for datetime");
case TIMESTAMP:
return Type.TIMESTAMP;
case SET:
return Type.SET;
case ENUM:
return Type.ENUM;
case GEOMETRY:
return Type.GEOMETRY;
default:
break;
}
throw new IllegalArgumentException("Unknown type in metadata: " + this.field.getMysqlType());
}
public long getLength() {
return this.field.getLength();
}
public int getFractionalDigits() {
return this.field.getDecimals();
}
public boolean isNumberSigned() {
return MysqlType.isSigned(this.field.getMysqlType());
}
public String getCollationName() {
return CharsetMapping.getStaticCollationNameForCollationIndex(this.field.getCollationIndex()); // TODO use CharsetSettings method
}
public String getCharacterSetName() {
return CharsetMapping.getStaticMysqlCharsetNameForCollationIndex(this.field.getCollationIndex()); // TODO use CharsetSettings method
}
public boolean isPadded() {
return this.field.isZeroFill() || (this.field.getMysqlType() == MysqlType.CHAR);
}
public boolean isNullable() {
return !this.field.isNotNull();
}
public boolean isAutoIncrement() {
return this.field.isAutoIncrement();
}
public boolean isPrimaryKey() {
return this.field.isPrimaryKey();
}
public boolean isUniqueKey() {
return this.field.isUniqueKey();
}
public boolean isPartKey() {
return this.field.isMultipleKey();
}
}