jodd.db.oom.sqlgen.chunks

Class SqlChunk

java.lang.Object

jodd.db.oom.sqlgen.chunks.SqlChunk

Direct Known Subclasses:

ColumnsSelectChunk, InsertChunk, MatchChunk, RawSqlChunk, ReferenceChunk, TableChunk, UpdateSetChunk, ValueChunk

public abstract class SqlChunk
extends java.lang.Object

SQL chunk defines part of the SQL query that can be processed.

Field Summary

Fields

Modifier and Type	Field and Description
static int	CHUNK_INSERT
static int	CHUNK_MATCH
static int	CHUNK_RAW
static int	CHUNK_REFERENCE
static int	CHUNK_SELECT_COLUMNS
static int	CHUNK_TABLE
static int	CHUNK_UPDATE
static int	CHUNK_VALUE
static int	COLS_ALL
static int	COLS_ALL_BUT_ID
static int	COLS_NA
static int	COLS_NA_MULTI
static int	COLS_ONLY_EXISTING
static int	COLS_ONLY_IDS
protected SqlChunk	nextChunk
protected SqlChunk	previousChunk
protected TemplateData	templateData

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	SqlChunk(DbEntityManager dbEntityManager, int chunkType)

Method Summary

Modifier and Type	Method and Description
protected void	appendMissingSpace(java.lang.StringBuilder out) Appends missing space if the output doesn't end with whitespace.
protected void	defineParameter(java.lang.StringBuilder query, java.lang.String name, java.lang.Object value, DbEntityColumnDescriptor dec) Defines parameter with name and its value.
protected DbEntityDescriptor	findColumnRef(java.lang.String columnRef) Finds a table that contains given column.
SqlChunk	getNextChunk() Returns next chunk.
SqlChunk	getPreviousChunk() Returns previous chunk.
void	init(TemplateData templateData) Initializes chunk.
void	insertChunkAfter(SqlChunk previous) Appends chunk to previous one and maintains the double-linked list of the previous chunk.
protected boolean	isEmptyColumnValue(DbEntityColumnDescriptor dec, java.lang.Object value) Returns true if a value is considered empty i.e. not existing.
boolean	isPreviousChunkOfSameType() Returns true if previous chunk is of the same type.
boolean	isPreviousChunkOfType(int type) Returns true if previous chunk is of provided type.
boolean	isPreviousMacroChunk() Returns true if previous chunk is not raw.
boolean	isPreviousRawChunk()
protected DbEntityDescriptor	lookupName(java.lang.String entityName) Lookups for entity name and throws exception if entity name not found.
protected DbEntityDescriptor	lookupTableRef(java.lang.String tableRef) Lookups for table reference and throws an exception if table reference not found.
protected DbEntityDescriptor	lookupTableRef(java.lang.String tableRef, boolean throwExceptionIfNotFound) Lookups for table reference and optionally throws an exception if table reference not found.
protected DbEntityDescriptor	lookupType(java.lang.Class entity) Lookups for entity name and throws an exception if entity type is invalid.
abstract void	process(java.lang.StringBuilder out) Process the chunk and appends data to the output.
protected static java.lang.Class	resolveClass(java.lang.Object object) Resolves object to a class.
protected java.lang.String	resolveTable(java.lang.String tableRef, DbEntityDescriptor ded) Resolves table name or alias that will be used in the query.
protected void	separateByCommaOrSpace(java.lang.StringBuilder out) Separates from previous chunk by comma if is of the same type.

Methods inherited from class java.lang.Object

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

Field Detail

COLS_NA

public static final int COLS_NA

See Also:

Constant Field Values

COLS_ONLY_EXISTING

public static final int COLS_ONLY_EXISTING

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Constant Field Values

COLS_ONLY_IDS

public static final int COLS_ONLY_IDS

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Constant Field Values

COLS_ALL

public static final int COLS_ALL

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Constant Field Values

COLS_ALL_BUT_ID

public static final int COLS_ALL_BUT_ID

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Constant Field Values

COLS_NA_MULTI

public static final int COLS_NA_MULTI

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Constant Field Values

CHUNK_RAW

public static final int CHUNK_RAW

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Constant Field Values

CHUNK_SELECT_COLUMNS

public static final int CHUNK_SELECT_COLUMNS

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Constant Field Values

CHUNK_TABLE

public static final int CHUNK_TABLE

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Constant Field Values

CHUNK_REFERENCE

public static final int CHUNK_REFERENCE

See Also:

Constant Field Values

CHUNK_MATCH

public static final int CHUNK_MATCH

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Constant Field Values

CHUNK_VALUE

public static final int CHUNK_VALUE

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Constant Field Values

CHUNK_INSERT

public static final int CHUNK_INSERT

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Constant Field Values

CHUNK_UPDATE

public static final int CHUNK_UPDATE

See Also:

Constant Field Values

previousChunk

protected SqlChunk previousChunk

nextChunk

protected SqlChunk nextChunk

templateData

protected TemplateData templateData

Constructor Detail

SqlChunk

protected SqlChunk(DbEntityManager dbEntityManager,
                   int chunkType)

Method Detail

getPreviousChunk

public SqlChunk getPreviousChunk()

Returns previous chunk.

getNextChunk

public SqlChunk getNextChunk()

Returns next chunk.

insertChunkAfter

public void insertChunkAfter(SqlChunk previous)

Appends chunk to previous one and maintains the double-linked list of the previous chunk. Current surrounding connections of this chunk will be cut-off.

isPreviousChunkOfType

public boolean isPreviousChunkOfType(int type)

Returns true if previous chunk is of provided type.

isPreviousChunkOfSameType

public boolean isPreviousChunkOfSameType()

Returns true if previous chunk is of the same type.

isPreviousMacroChunk

public boolean isPreviousMacroChunk()

Returns true if previous chunk is not raw.

isPreviousRawChunk

public boolean isPreviousRawChunk()

init

public void init(TemplateData templateData)

Initializes chunk. Assigns TemplateData to chunk. If chunk needs some pre-processing, they should be done here.

process

public abstract void process(java.lang.StringBuilder out)

Process the chunk and appends data to the output.

lookupName

protected DbEntityDescriptor lookupName(java.lang.String entityName)

Lookups for entity name and throws exception if entity name not found.

lookupType

protected DbEntityDescriptor lookupType(java.lang.Class entity)

Lookups for entity name and throws an exception if entity type is invalid.

lookupTableRef

protected DbEntityDescriptor lookupTableRef(java.lang.String tableRef)

Lookups for table reference and throws an exception if table reference not found.

lookupTableRef

protected DbEntityDescriptor lookupTableRef(java.lang.String tableRef,
                                            boolean throwExceptionIfNotFound)

Lookups for table reference and optionally throws an exception if table reference not found.

findColumnRef

protected DbEntityDescriptor findColumnRef(java.lang.String columnRef)

Finds a table that contains given column.

resolveTable

protected java.lang.String resolveTable(java.lang.String tableRef,
                                        DbEntityDescriptor ded)

Resolves table name or alias that will be used in the query.

defineParameter

protected void defineParameter(java.lang.StringBuilder query,
                               java.lang.String name,
                               java.lang.Object value,
                               DbEntityColumnDescriptor dec)

Defines parameter with name and its value.

resolveClass

protected static java.lang.Class resolveClass(java.lang.Object object)

Resolves object to a class.

isEmptyColumnValue

protected boolean isEmptyColumnValue(DbEntityColumnDescriptor dec,
                                     java.lang.Object value)

Returns true if a value is considered empty i.e. not existing.

appendMissingSpace

protected void appendMissingSpace(java.lang.StringBuilder out)

Appends missing space if the output doesn't end with whitespace.

separateByCommaOrSpace

protected void separateByCommaOrSpace(java.lang.StringBuilder out)

Separates from previous chunk by comma if is of the same type.