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/*
* Copyright (c) 2012-2019 Snowflake Computing Inc. All rights reserved.
*/
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package net.snowflake.client.core;
/**
* Used to check if the statementType belongs to DDL or DML
* The enum of each statement type is defined in
* com.snowflake.core.Statement.java
*
* @author hyu
*/
public enum SFStatementType
{
/**
* By default we set query will generate result set, which means executeUpdate
* will throw exception. In that way, we have a clear control of what
* statements can be executed by executeUpdate
*/
UNKNOWN(0x0000, true),
SELECT(0x1000, true),
/**
* Data Manipulation Language
*/
DML(0x3000, false),
INSERT(0x3000 + 0x100, false),
UPDATE(0x3000 + 0x200, false),
DELETE(0x3000 + 0x300, false),
MERGE(0x3000 + 0x400, false),
MULTI_INSERT(0x3000 + 0x500, false),
COPY(0x3000 + 0x600, false),
UNLOAD(0x3000 + 0x700, false),
RECLUSTER(0x3000 + 0x800, false),
/**
* System Command Language (USE, DESCRIBE etc)
*/
SCL(0x4000, false),
ALTER_SESSION(0x4000 + 0x100, false),
USE(0x4000 + 0x300, false),
USE_DATABASE(0x4000 + 0x300 + 0x01, false),
USE_SCHEMA(0x4000 + 0x300 + 0x02, false),
USE_WAREHOUSE(0x4000 + 0x300 + 0x03, false),
SHOW(0x4000 + 0x400, true),
DESCRIBE(0x4000 + 0x500, true),
LIST(0x4000 + 0x700 + 0x01, true),
/**
* Transaction Command Language (COMMIT, ROLLBACK)
*/
TCL(0x5000, false),
/**
* Data Definition Language
*/
DDL(0x6000, false),
/**
* Stage-related commands (other than LIST)
*/
GET(0x7000 + 0x100 + 0x01, true),
PUT(0x7000 + 0x100 + 0x02, true),
REMOVE(0x7000 + 0x100 + 0x03, true),
;
private final long statementTypeId;
/**
* Used by Statement.executeUpdate to determine if we should return
* update counts or throw exception. In general, JDBC should only throw
* exception if a result set object is required.
*/
private final boolean generateResultSet;
private static final long LEVEL_3_RANGE = 0x1000;
SFStatementType(long id, boolean generateResultSet)
{
this.statementTypeId = id;
this.generateResultSet = generateResultSet;
}
public static SFStatementType lookUpTypeById(long id)
{
for (SFStatementType type : SFStatementType.values())
{
if (type.getStatementTypeId() == id)
{
return type;
}
}
// if not specific type is found, then return category of statement
if (id >= SCL.getStatementTypeId() && id < SCL.getStatementTypeId()
+ LEVEL_3_RANGE)
{
return SCL;
}
else if (id >= TCL.getStatementTypeId() && id < TCL.getStatementTypeId()
+ LEVEL_3_RANGE)
{
return TCL;
}
else if (id >= DDL.getStatementTypeId() && id < DDL.getStatementTypeId()
+ LEVEL_3_RANGE)
{
return DDL;
}
else
{
return UNKNOWN;
}
}
public long getStatementTypeId()
{
return statementTypeId;
}
public boolean isDDL()
{
return this == DDL;
}
public boolean isDML()
{
return statementTypeId >= DML.getStatementTypeId() &&
statementTypeId < DML.getStatementTypeId() + LEVEL_3_RANGE;
}
public boolean isTCL()
{
return this == TCL;
}
public boolean isSCL()
{
return this == SCL;
}
public boolean isGenerateResultSet()
{
return this.generateResultSet;
}
public boolean isSelect()
{
return this.statementTypeId == SELECT.statementTypeId;
}
}
