Package com.apple.foundationdb.relational.api.fluentsql.expression

Class ParsingFragment<T extends DataType>

java.lang.Object

com.apple.foundationdb.relational.api.fluentsql.expression.ParsingFragment<T>

Type Parameters:

T - The type of the fragment.

All Implemented Interfaces:

Expression<T>, ExpressionFragment<T>

@API(EXPERIMENTAL)
public class ParsingFragment<T extends DataType>
extends java.lang.Object
implements ExpressionFragment<T>

This represents an opaque query fragment, this is usually used in two situations.

• Building structured query from a given SQL statement: the builder uses ParsingFragment to save chunks of the query string without going deeper into processing them and modelling them into a corresponding Expression<?> tree, this is required to capture expressions that can not be represented at compile time such as complex boolean expression trees in where clause, or to "glance over" certain parts of the query that are irrelevant for the builder for performance reasons.
• Query decoration: The user wants to decorate the query with expressions not (yet) supported by the ExpressionFactory.

Constructor Summary

Constructors

Constructor	Description
ParsingFragment(T dataType, java.lang.String fragment)

Method Summary

Modifier and Type	Method	Description
<R,C> R	accept(FluentVisitor<R,C> visitor, C context)
boolean	equals(java.lang.Object o)
java.lang.String	getFragment()
DataType	getType()
int	hashCode()
java.lang.String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.apple.foundationdb.relational.api.fluentsql.expression.ExpressionFragment

asBoolean, asBoolean, asDouble, asDouble, asFloat, asFloat, asInt, asInt, asLong, asLong, asString, asString

Constructor Detail

ParsingFragment

public ParsingFragment(@Nonnull
                       T dataType,
                       @Nonnull
                       java.lang.String fragment)

Method Detail

accept

@Nullable
public <R,C> R accept(@Nonnull
                            FluentVisitor<R,C> visitor,
                            @Nonnull
                            C context)

Specified by:

accept in interface Expression<T extends DataType>

getType

public DataType getType()

Specified by:

getType in interface Expression<T extends DataType>

getFragment

@Nonnull
public java.lang.String getFragment()

Specified by:

getFragment in interface ExpressionFragment<T extends DataType>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object