public class DBAliasExpr extends DBColumnExpr
There is no need to explicitly create instances of this class.
Instead use DBColumnExpr.as(String)
attributes, beanPropertyName, DBCOLATTR_TITLE, DBCOLATTR_TYPE, options
CTX_ALIAS, CTX_ALL, CTX_DEFAULT, CTX_FULLNAME, CTX_NAME, CTX_NOPARENTHESES, CTX_VALUE
Constructor and Description |
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DBAliasExpr(DBColumnExpr expr,
String alias)
Constructs a DBAliasExpr object combine the DBColumnExpr object with the alias name.
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Modifier and Type | Method and Description |
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void |
addReferencedColumns(Set<DBColumn> list)
Internal function to obtain all DBColumnExpr-objects used by this expression.
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void |
addSQL(StringBuilder buf,
long context)
Creates the SQL-Command adds the alias name to the SQL-Command.
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Element |
addXml(Element parent,
long flags)
This function set the alias name to the XML tag.
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boolean |
equals(Object other)
Overrides the equals method
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DBDatabase |
getDatabase()
Returns the current DBDatabase object.
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DataType |
getDataType()
Returns the data type of the DBColumnExpr object.
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DBColumnExpr |
getExpr()
This helper function returns the underlying column expression.
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String |
getName()
This helper function returns the alias name.
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DBColumn |
getUpdateColumn()
Returns the DBColunm object.
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boolean |
isAggregate()
Always returns false since an alias expression cannot be an aggregate.
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String |
toString()
Overrides the toString method.
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abs, append, as, as, asc, avg, ceiling, cmp, coalesce, convertTo, convertTo, count, countDistinct, day, decode, decode, decode, decode, decode, decode, desc, divideBy, floor, getAttribute, getBeanPropertyName, getControlType, getExprFromPhrase, getExprFromPhrase, getOptions, getSourceColumn, getTitle, in, in, in, indexOf, indexOf, indexOf, is, isBetween, isGreaterThan, isLessOrEqual, isMoreOrEqual, isNot, isNotBetween, isSmallerThan, length, like, like, likeLower, likeUpper, lower, max, min, minus, minus, modulo, month, multiplyWith, notIn, notIn, notIn, notLike, nvl, parenthesis, plus, plus, replace, reverse, round, setAttribute, setBeanPropertyName, setControlType, setOptions, setTitle, substring, substring, substring, substring, substring, substring, sum, toChar, toChar, trim, trimLeft, trimRight, trunc, upper, when, year
getObjectValue, getValueClass
public DBAliasExpr(DBColumnExpr expr, String alias)
expr
- an DBColumnExpr object, one columnalias
- the alias name of the columnpublic DBDatabase getDatabase()
getDatabase
in class DBObject
public DataType getDataType()
getDataType
in interface ColumnExpr
getDataType
in class DBColumnExpr
DataType
public String getName()
getName
in interface ColumnExpr
getName
in class DBColumnExpr
public DBColumnExpr getExpr()
public Element addXml(Element parent, long flags)
addXml
in class DBColumnExpr
parent
- the parent element to which to append the column descriptionflags
- currently not usedpublic DBColumn getUpdateColumn()
getUpdateColumn
in class DBColumnExpr
public boolean isAggregate()
isAggregate
in class DBColumnExpr
public void addReferencedColumns(Set<DBColumn> list)
DBExpr
addReferencedColumns
in class DBExpr
list
- list to which all used column expressions must be addedDBExpr.addReferencedColumns(Set)
public void addSQL(StringBuilder buf, long context)
public boolean equals(Object other)
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