org.h2.expression.function

类 CSVWriteFunction

java.lang.Object

org.h2.expression.Expression

org.h2.expression.OperationN

org.h2.expression.function.FunctionN

org.h2.expression.function.CSVWriteFunction

所有已实现的接口:

ExpressionWithVariableParameters, NamedExpression, HasSQL, Typed

public final class CSVWriteFunction
extends FunctionN

A CSVWRITE function.

字段概要

从类继承的字段 org.h2.expression.OperationN

args, argsCount, type

从类继承的字段 org.h2.expression.Expression

AUTO_PARENTHESES, MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL, WITH_PARENTHESES, WITHOUT_PARENTHESES

从接口继承的字段 org.h2.util.HasSQL

ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

构造器概要

构造器

构造器和说明
CSVWriteFunction()

方法概要

限定符和类型	方法和说明
String	getName() Get the name.
Value	getValue(SessionLocal session) Return the resulting value for the current row.
boolean	isEverything(ExpressionVisitor visitor) Check if this expression and all sub-expressions can fulfill a criteria.
Expression	optimize(SessionLocal session) Try to optimize the expression.
static void	setCsvDelimiterEscape(Csv csv, String fieldSeparator, String fieldDelimiter, String escapeCharacter) Sets delimiter options.

从类继承的方法 org.h2.expression.function.FunctionN

getUnenclosedSQL, getValue

从类继承的方法 org.h2.expression.OperationN

addParameter, doneWithParameters, getCost, getSubexpression, getSubexpressionCount, getType, mapColumns, optimizeArguments, setEvaluatable, updateAggregate

从类继承的方法 org.h2.expression.Expression

addFilterConditions, createIndexConditions, getAlias, getBooleanValue, getColumnName, getColumnNameForView, getEnclosedSQL, getNonAliasExpression, getNotIfPossible, getNullable, getSchemaName, getSQL, getSQL, getSQL, getSQL, getTableAlias, getTableName, getWhenSQL, getWhenValue, isConstant, isIdentity, isNullConstant, isValueSet, isWhenConditionOperand, needParentheses, optimizeCondition, toString, writeExpressions, writeExpressions

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

从接口继承的方法 org.h2.util.HasSQL

getTraceSQL

构造器详细资料

CSVWriteFunction

public CSVWriteFunction()

方法详细资料

getValue

public Value getValue(SessionLocal session)

从类复制的说明: Expression

Return the resulting value for the current row.

覆盖:

getValue 在类中 FunctionN

参数:

session - the session

返回:

the result

setCsvDelimiterEscape

public static void setCsvDelimiterEscape(Csv csv,
                                         String fieldSeparator,
                                         String fieldDelimiter,
                                         String escapeCharacter)

Sets delimiter options.

参数:

csv - the CSV utility instance

fieldSeparator - the field separator

fieldDelimiter - the field delimiter

escapeCharacter - the escape character

optimize

public Expression optimize(SessionLocal session)

从类复制的说明: Expression

Try to optimize the expression.

指定者:

optimize 在类中 Expression

参数:

session - the session

返回:

the optimized expression

getName

public String getName()

从接口复制的说明: NamedExpression

Get the name.

返回:

the name in uppercase

isEverything

public boolean isEverything(ExpressionVisitor visitor)

从类复制的说明: Expression

Check if this expression and all sub-expressions can fulfill a criteria. If any part returns false, the result is false.

覆盖:

isEverything 在类中 OperationN

参数:

visitor - the visitor

返回:

if the criteria can be fulfilled