org.jooq.RenderContext Maven / Gradle / Ivy
/**
* Copyright (c) 2009-2016, Data Geekery GmbH (http://www.datageekery.com)
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* limitations under the License.
*
* Other licenses:
* -----------------------------------------------------------------------------
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* ASL 2.0 and offer limited warranties, support, maintenance, and commercial
* database integrations.
*
* For more information, please visit: http://www.jooq.org/licenses
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package org.jooq;
import org.jooq.conf.ParamType;
import org.jooq.conf.RenderKeywordStyle;
import org.jooq.conf.Settings;
/**
* The render context is used for rendering {@link QueryPart}'s to SQL.
*
* A new render context is instantiated every time a {@link Query} is rendered.
* QueryPart's will then pass the same context to their components
*
* @author Lukas Eder
* @see BindContext
*/
public interface RenderContext extends Context {
/**
* Peek the next alias that will be generated by {@link #nextAlias()}.
*/
@Override
String peekAlias();
/**
* Return a new alias that is unique for the scope of one query. These
* aliases are sometimes needed when unaliased projections are defined in
* subqueries, which can lead to syntax errors.
*/
@Override
String nextAlias();
/**
* Render the context's underlying SQL statement.
*/
@Override
String render();
/**
* Render a query part in a new context derived from this one. The rendered
* SQL will not be appended to this context.
*/
@Override
String render(QueryPart part);
/**
* Append a SQL keyword to the context's contained {@link StringBuilder}.
*
* Use this to have your SQL keyword rendered in {@link RenderKeywordStyle}.
*/
@Override
RenderContext keyword(String keyword);
/**
* Append some SQL to the context's contained {@link StringBuilder}.
*/
@Override
RenderContext sql(String sql);
/**
* Append some SQL to the context's contained {@link StringBuilder}.
*
* Set literal = true to indicate that the
* RenderContext shall not format the argument SQL.
*/
@Override
RenderContext sql(String sql, boolean literal);
/**
* Append some SQL to the context's contained {@link StringBuilder}.
*/
@Override
RenderContext sql(char sql);
/**
* Append some SQL to the context's contained {@link StringBuilder}.
*/
@Override
RenderContext sql(int sql);
/**
* Recurse rendering.
*
* @deprecated - 3.2.0 - [#2666] - Use {@link #visit(QueryPart)} instead
*/
@Deprecated
RenderContext sql(QueryPart part);
/**
* Override the value of {@link Settings#isRenderFormatted()}.
*/
@Override
RenderContext format(boolean format);
/**
* The value of {@link Settings#isRenderFormatted()}.
*/
@Override
boolean format();
/**
* Render a new line character (only if {@link Settings#isRenderFormatted()}
* is set to true).
*/
@Override
RenderContext formatNewLine();
/**
* Render a new line character (only if {@link Settings#isRenderFormatted()}
* is set to true, and the {@link #formatPrintMargin(int)} has
* been exceeded).
*/
@Override
RenderContext formatNewLineAfterPrintMargin();
/**
* Render a new line character (only if {@link Settings#isRenderFormatted()}
* is set to true), or a whitespace separator character
* otherwise.
*/
@Override
RenderContext formatSeparator();
/**
* Start indenting subsequent SQL by one level (two characters), if
* {@link Settings#isRenderFormatted()} is set to true.
*
* This is the same as calling {@link #formatIndentStart(int)} with a
* parameter of 2
*/
@Override
RenderContext formatIndentStart();
/**
* Start indenting subsequent SQL by a number of characters, if
* {@link Settings#isRenderFormatted()} is set to true.
*/
@Override
RenderContext formatIndentStart(int indent);
/**
* Start indenting subsequent SQL at the same level as the current line, if
* {@link Settings#isRenderFormatted()} is set to true.
*/
@Override
RenderContext formatIndentLockStart();
/**
* Stop indenting subsequent SQL by one level (two characters), if
* {@link Settings#isRenderFormatted()} is set to true.
*
* This is the same as calling {@link #formatIndentEnd(int)} with a
* parameter of 2
*/
@Override
RenderContext formatIndentEnd();
/**
* Stop indenting subsequent SQL by a number of characters, if
* {@link Settings#isRenderFormatted()} is set to true.
*/
@Override
RenderContext formatIndentEnd(int indent);
/**
* Stop indenting subsequent SQL at the same level as the current line, if
* {@link Settings#isRenderFormatted()} is set to true.
*/
@Override
RenderContext formatIndentLockEnd();
/**
* Set a print margin that will be applied to formatted SQL, if
* {@link Settings#isRenderFormatted()} is set to true.
*
* The default print margin is 80. Setting this to zero or a
* negative value means that no print margin will be applied.
*
* The print margin is applied to any of these QueryParts:
*
* - {@link Field#in(Field...)} and related expressions
*/
@Override
RenderContext formatPrintMargin(int margin);
/**
* Append some (quoted) literal to the context's contained
* {@link StringBuilder}.
*/
@Override
RenderContext literal(String literal);
/**
* Whether bind variables should be inlined, rather than rendered as
* '?'.
*
* @deprecated - 3.1.0 - [#2414] - This method should no longer be used. Use
* {@link #paramType()} instead.
*/
@Deprecated
boolean inline();
/**
* Set the new context value for {@link #inline()}.
*
* @deprecated - 3.1.0 - [#2414] - This method should no longer be used. Use
* {@link #paramType(ParamType)} instead.
*/
@Deprecated
RenderContext inline(boolean inline);
/**
* Whether query parts should render qualified names or not.
*/
@Override
boolean qualify();
/**
* Sett the new context value for {@link #qualify()}.
*/
@Override
RenderContext qualify(boolean qualify);
/**
* Whether bind variables should be rendered as named parameters:
* :1, :2, :custom_name
*
* or as JDBC bind variables
* ?
*
* @deprecated - 3.1.0 - [#2414] - This method should no longer be used. Use
* {@link #paramType()} instead.
*/
@Deprecated
boolean namedParams();
/**
* Set the new context value for {@link #namedParams()}.
*
* @deprecated - 3.1.0 - [#2414] - This method should no longer be used. Use
* {@link #paramType(ParamType)} instead.
*/
@Deprecated
RenderContext namedParams(boolean renderNamedParams);
/**
* Specify, how bind values should be rendered.
*
*
* - As {@link ParamType#INDEXED} parameters:
* ?, ?, ?
* - As {@link ParamType#NAMED} parameters:
* :1, :2, :custom_name
* - As {@link ParamType#INLINED} parameters:
* 1, 'A', null
*
*/
@Override
ParamType paramType();
/**
* Set the new context value for {@link #paramType()}.
*/
@Override
RenderContext paramType(ParamType paramType);
/**
* The currently applied cast mode for bind values.
*/
@Override
CastMode castMode();
/**
* Set the new cast mode for {@link #castMode()}.
*/
@Override
RenderContext castMode(CastMode mode);
/**
* Whether casting must be applied. The result follows this logic:
*
*
* CastMode
* result
*
*
* ALWAYStrue
*
* NEVERfalse
*
* SOMEtrue or false depending on the dialect
*
* DEFAULTnull
*
*
* @deprecated - [#3703] - 3.5.0 - Do not use this any longer
*/
@Deprecated
@Override
Boolean cast();
/**
* Set the new cast mode to {@link CastMode#SOME} for a list of dialects.
*
* @deprecated - [#3703] - 3.5.0 - Do not use this any longer
*/
@Deprecated
@Override
RenderContext castModeSome(SQLDialect... dialects);
/**
* The cast mode for bind values.
*
* @see RenderContext#castMode()
*/
enum CastMode {
/**
* Cast all bind values to their respective type.
*/
ALWAYS,
/**
* Cast no bind values to their respective type.
*/
NEVER,
/**
* Cast bind values only in some dialects. The specified dialects assume
* {@link #ALWAYS} behaviour, all the other dialects assume
* {@link #NEVER}.
*
* @deprecated - [#3703] - 3.5.0 - Do not use this any longer
*/
@Deprecated
SOME,
/**
* Cast when needed. This is the default mode if not specified
* otherwise.
*/
DEFAULT
}
}