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Overview
| Comment: | More progress on doc comments. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | sessions |
| Files: | files | file ages | folders |
| SHA1: |
dfc53a02a6ee4b2e93f12be329972181 |
| User & Date: | mistachkin 2017-10-14 04:38:02.398 |
Context
|
2017-10-14
| ||
| 06:37 | Final work on the initial draft of the doc comments. check-in: 8f18f2c045 user: mistachkin tags: sessions | |
| 04:38 | More progress on doc comments. check-in: dfc53a02a6 user: mistachkin tags: sessions | |
| 03:54 | Fill in doc comments for most of the interfaces. check-in: 381e861fa6 user: mistachkin tags: sessions | |
Changes
Changes to System.Data.SQLite/SQLiteSession.cs.
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#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteChangeSetIterator Class
internal class SQLiteChangeSetIterator : IDisposable
{
#region Private Data
private IntPtr iterator;
///////////////////////////////////////////////////////////////////////
private bool ownHandle;
#endregion
///////////////////////////////////////////////////////////////////////
#region Protected Constructors
protected SQLiteChangeSetIterator(
IntPtr iterator,
bool ownHandle
)
{
this.iterator = iterator;
this.ownHandle = ownHandle;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Methods
internal void CheckHandle()
{
if (iterator == IntPtr.Zero)
throw new InvalidOperationException("iterator is not open");
}
///////////////////////////////////////////////////////////////////////
internal IntPtr GetIntPtr()
{
return iterator;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Methods
public bool Next()
{
CheckDisposed();
CheckHandle();
SQLiteErrorCode rc = UnsafeNativeMethods.sqlite3changeset_next(
iterator);
| > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 |
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteChangeSetIterator Class
/// <summary>
/// This class manages the native change set iterator. It is used as the
/// base class for the <see cref="SQLiteMemoryChangeSetIterator" /> and
/// <see cref="SQLiteStreamChangeSetIterator" /> classes. It knows how to
/// advance the native iterator handle as well as finalize it.
/// </summary>
internal class SQLiteChangeSetIterator : IDisposable
{
#region Private Data
/// <summary>
/// The native change set (a.k.a. iterator) handle.
/// </summary>
private IntPtr iterator;
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Non-zero if this instance owns the native iterator handle in the
/// <see cref="iterator" /> field. In that case, this instance will
/// finalize the native iterator handle upon being disposed or
/// finalized.
/// </summary>
private bool ownHandle;
#endregion
///////////////////////////////////////////////////////////////////////
#region Protected Constructors
/// <summary>
/// Constructs a new instance of this class using the specified native
/// iterator handle.
/// </summary>
/// <param name="iterator">
/// The native iterator handle to use.
/// </param>
/// <param name="ownHandle">
/// Non-zero if this instance is to take ownership of the native
/// iterator handle specified by <paramref name="iterator" />.
/// </param>
protected SQLiteChangeSetIterator(
IntPtr iterator,
bool ownHandle
)
{
this.iterator = iterator;
this.ownHandle = ownHandle;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Methods
/// <summary>
/// Throws an exception if the native iterator handle is invalid.
/// </summary>
internal void CheckHandle()
{
if (iterator == IntPtr.Zero)
throw new InvalidOperationException("iterator is not open");
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Used to query the native iterator handle. This method is only used
/// by the <see cref="SQLiteChangeSetMetadataItem" /> class.
/// </summary>
/// <returns>
/// The native iterator handle -OR- <see cref="IntPtr.Zero" /> if it
/// is not available.
/// </returns>
internal IntPtr GetIntPtr()
{
return iterator;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Methods
/// <summary>
/// Attempts to advance the native iterator handle to its next item.
/// </summary>
/// <returns>
/// Non-zero if the native iterator handle was advanced and contains
/// more data; otherwise, zero. If the underlying native API returns
/// an unexpected value then an exception will be thrown.
/// </returns>
public bool Next()
{
CheckDisposed();
CheckHandle();
SQLiteErrorCode rc = UnsafeNativeMethods.sqlite3changeset_next(
iterator);
|
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}
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Static "Factory" Methods
public static SQLiteChangeSetIterator Attach(
IntPtr iterator
)
{
return new SQLiteChangeSetIterator(iterator, false);
}
#endregion
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}
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Static "Factory" Methods
/// <summary>
/// Attempts to create an instance of this class that is associated
/// with the specified native iterator handle. Ownership of the
/// native iterator handle is NOT transferred to the new instance of
/// this class.
/// </summary>
/// <param name="iterator">
/// The native iterator handle to use.
/// </param>
/// <returns>
/// The new instance of this class. No return value is reserved to
/// indicate an error; however, if the native iterator handle is not
/// valid, any subsequent attempt to make use of it via the returned
/// instance of this class may throw exceptions.
/// </returns>
public static SQLiteChangeSetIterator Attach(
IntPtr iterator
)
{
return new SQLiteChangeSetIterator(iterator, false);
}
#endregion
|
| ︙ | ︙ | |||
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#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteMemoryChangeSetIterator Class
internal sealed class SQLiteMemoryChangeSetIterator :
SQLiteChangeSetIterator
{
#region Private Data
private IntPtr pData;
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Constructors
private SQLiteMemoryChangeSetIterator(
IntPtr pData,
IntPtr iterator,
bool ownHandle
)
: base(iterator, ownHandle)
{
this.pData = pData;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Static "Factory" Methods
public static SQLiteMemoryChangeSetIterator Create(
byte[] rawData
)
{
SQLiteSessionHelpers.CheckRawData(rawData);
SQLiteMemoryChangeSetIterator result = null;
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#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteMemoryChangeSetIterator Class
/// <summary>
/// This class manages the native change set iterator for a set of changes
/// contained entirely in memory.
/// </summary>
internal sealed class SQLiteMemoryChangeSetIterator :
SQLiteChangeSetIterator
{
#region Private Data
/// <summary>
/// The native memory buffer allocated to contain the set of changes
/// associated with this instance. This will always be freed when this
/// instance is disposed or finalized.
/// </summary>
private IntPtr pData;
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Constructors
/// <summary>
/// Constructs an instance of this class using the specified native
/// memory buffer and native iterator handle.
/// </summary>
/// <param name="pData">
/// The native memory buffer to use.
/// </param>
/// <param name="iterator">
/// The native iterator handle to use.
/// </param>
/// <param name="ownHandle">
/// Non-zero if this instance is to take ownership of the native
/// iterator handle specified by <paramref name="iterator" />.
/// </param>
private SQLiteMemoryChangeSetIterator(
IntPtr pData,
IntPtr iterator,
bool ownHandle
)
: base(iterator, ownHandle)
{
this.pData = pData;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Static "Factory" Methods
/// <summary>
/// Attempts to create an instance of this class using the specified
/// raw byte data.
/// </summary>
/// <param name="rawData">
/// The raw byte data containing the set of changes for this native
/// iterator.
/// </param>
/// <returns>
/// The new instance of this class -OR- null if it cannot be created.
/// </returns>
public static SQLiteMemoryChangeSetIterator Create(
byte[] rawData
)
{
SQLiteSessionHelpers.CheckRawData(rawData);
SQLiteMemoryChangeSetIterator result = null;
|
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#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteStreamChangeSetIterator Class
internal sealed class SQLiteStreamChangeSetIterator :
SQLiteChangeSetIterator
{
#region Private Data
private SQLiteStreamAdapter streamAdapter;
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Constructors
private SQLiteStreamChangeSetIterator(
SQLiteStreamAdapter streamAdapter,
IntPtr iterator,
bool ownHandle
)
: base(iterator, ownHandle)
{
this.streamAdapter = streamAdapter;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Static "Factory" Methods
public static SQLiteStreamChangeSetIterator Create(
Stream stream,
SQLiteConnectionFlags flags
)
{
if (stream == null)
throw new ArgumentNullException("stream");
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#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteStreamChangeSetIterator Class
/// <summary>
/// This class manages the native change set iterator for a set of changes
/// backed by a <see cref="Stream" /> instance.
/// </summary>
internal sealed class SQLiteStreamChangeSetIterator :
SQLiteChangeSetIterator
{
#region Private Data
/// <summary>
/// The <see cref="SQLiteStreamAdapter" /> instance that is managing
/// the underlying <see cref="Stream" /> used as the backing store for
/// the set of changes associated with this native change set iterator.
/// </summary>
private SQLiteStreamAdapter streamAdapter;
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Constructors
/// <summary>
/// Constructs an instance of this class using the specified native
/// iterator handle and <see cref="SQLiteStreamAdapter" />.
/// </summary>
/// <param name="streamAdapter">
/// The <see cref="SQLiteStreamAdapter" /> instance to use.
/// </param>
/// <param name="iterator">
/// The native iterator handle to use.
/// </param>
/// <param name="ownHandle">
/// Non-zero if this instance is to take ownership of the native
/// iterator handle specified by <paramref name="iterator" />.
/// </param>
private SQLiteStreamChangeSetIterator(
SQLiteStreamAdapter streamAdapter,
IntPtr iterator,
bool ownHandle
)
: base(iterator, ownHandle)
{
this.streamAdapter = streamAdapter;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Static "Factory" Methods
/// <summary>
/// Attempts to create an instance of this class using the specified
/// <see cref="Stream" />.
/// </summary>
/// <param name="stream">
/// The <see cref="Stream" /> where the raw byte data for the set of
/// changes may be read.
/// </param>
/// <param name="flags">
/// The flags associated with the parent connection.
/// </param>
/// <returns>
/// The new instance of this class -OR- null if it cannot be created.
/// </returns>
public static SQLiteStreamChangeSetIterator Create(
Stream stream,
SQLiteConnectionFlags flags
)
{
if (stream == null)
throw new ArgumentNullException("stream");
|
| ︙ | ︙ | |||
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#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteChangeSetMetadataItem Class
internal sealed class SQLiteChangeSetMetadataItem :
ISQLiteChangeSetMetadataItem
{
#region Private Data
private SQLiteChangeSetIterator iterator;
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Constructors
public SQLiteChangeSetMetadataItem(
SQLiteChangeSetIterator iterator
)
{
this.iterator = iterator;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Methods
private void CheckIterator()
{
if (iterator == null)
throw new InvalidOperationException("iterator unavailable");
iterator.CheckHandle();
}
///////////////////////////////////////////////////////////////////////
private void PopulateOperationMetadata()
{
if ((tableName == null) || (numberOfColumns == null) ||
(operationCode == null) || (indirect == null))
{
CheckIterator();
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#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteChangeSetMetadataItem Class
/// <summary>
/// This interface implements properties and methods used to fetch metadata
/// about one change within a set of changes for a database.
/// </summary>
internal sealed class SQLiteChangeSetMetadataItem :
ISQLiteChangeSetMetadataItem
{
#region Private Data
/// <summary>
/// The <see cref="SQLiteChangeSetIterator" /> instance to use. This
/// will NOT be owned by this class and will not be disposed upon this
/// class being disposed or finalized.
/// </summary>
private SQLiteChangeSetIterator iterator;
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Constructors
/// <summary>
/// Constructs an instance of this class using the specified iterator
/// instance.
/// </summary>
/// <param name="iterator">
/// The native iterator handle to use.
/// </param>
public SQLiteChangeSetMetadataItem(
SQLiteChangeSetIterator iterator
)
{
this.iterator = iterator;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Methods
/// <summary>
/// Throws an exception if the managed iterator instance is invalid.
/// </summary>
private void CheckIterator()
{
if (iterator == null)
throw new InvalidOperationException("iterator unavailable");
iterator.CheckHandle();
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Populates the underlying data for the <see cref="TableName" />,
/// <see cref="NumberOfColumns" />, <see cref="OperationCode" />, and
/// <see cref="Indirect" /> properties, using the appropriate native
/// API.
/// </summary>
private void PopulateOperationMetadata()
{
if ((tableName == null) || (numberOfColumns == null) ||
(operationCode == null) || (indirect == null))
{
CheckIterator();
|
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operationCode = op;
indirect = (bIndirect != 0);
}
}
///////////////////////////////////////////////////////////////////////
private void PopulatePrimaryKeyColumns()
{
if (primaryKeyColumns == null)
{
CheckIterator();
IntPtr pPrimaryKeys = IntPtr.Zero;
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operationCode = op;
indirect = (bIndirect != 0);
}
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Populates the underlying data for the
/// <see cref="PrimaryKeyColumns" /> property using the appropriate
/// native API.
/// </summary>
private void PopulatePrimaryKeyColumns()
{
if (primaryKeyColumns == null)
{
CheckIterator();
IntPtr pPrimaryKeys = IntPtr.Zero;
|
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primaryKeyColumns[index] = (bytes[index] != 0);
}
}
}
///////////////////////////////////////////////////////////////////////
private void PopulateNumberOfForeignKeyConflicts()
{
if (numberOfForeignKeyConflicts == null)
{
CheckIterator();
int conflicts = 0;
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primaryKeyColumns[index] = (bytes[index] != 0);
}
}
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Populates the underlying data for the
/// <see cref="NumberOfForeignKeyConflicts" /> property using the
/// appropriate native API.
/// </summary>
private void PopulateNumberOfForeignKeyConflicts()
{
if (numberOfForeignKeyConflicts == null)
{
CheckIterator();
int conflicts = 0;
|
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}
}
#endregion
///////////////////////////////////////////////////////////////////////
#region ISQLiteChangeSetMetadataItem Members
private string tableName;
public string TableName
{
get
{
CheckDisposed();
PopulateOperationMetadata();
return tableName;
}
}
///////////////////////////////////////////////////////////////////////
private int? numberOfColumns;
public int NumberOfColumns
{
get
{
CheckDisposed();
PopulateOperationMetadata();
return (int)numberOfColumns;
}
}
///////////////////////////////////////////////////////////////////////
private SQLiteAuthorizerActionCode? operationCode;
public SQLiteAuthorizerActionCode OperationCode
{
get
{
CheckDisposed();
PopulateOperationMetadata();
return (SQLiteAuthorizerActionCode)operationCode;
}
}
///////////////////////////////////////////////////////////////////////
private bool? indirect;
public bool Indirect
{
get
{
CheckDisposed();
PopulateOperationMetadata();
return (bool)indirect;
}
}
///////////////////////////////////////////////////////////////////////
private bool[] primaryKeyColumns;
public bool[] PrimaryKeyColumns
{
get
{
CheckDisposed();
PopulatePrimaryKeyColumns();
return primaryKeyColumns;
}
}
///////////////////////////////////////////////////////////////////////
private int? numberOfForeignKeyConflicts;
public int NumberOfForeignKeyConflicts
{
get
{
CheckDisposed();
PopulateNumberOfForeignKeyConflicts();
return (int)numberOfForeignKeyConflicts;
}
}
///////////////////////////////////////////////////////////////////////
public SQLiteValue GetOldValue(
int columnIndex
)
{
CheckDisposed();
CheckIterator();
IntPtr pValue = IntPtr.Zero;
SQLiteErrorCode rc = UnsafeNativeMethods.sqlite3changeset_old(
iterator.GetIntPtr(), columnIndex, ref pValue);
return SQLiteValue.FromIntPtr(pValue);
}
///////////////////////////////////////////////////////////////////////
public SQLiteValue GetNewValue(
int columnIndex
)
{
CheckDisposed();
CheckIterator();
IntPtr pValue = IntPtr.Zero;
SQLiteErrorCode rc = UnsafeNativeMethods.sqlite3changeset_new(
iterator.GetIntPtr(), columnIndex, ref pValue);
return SQLiteValue.FromIntPtr(pValue);
}
///////////////////////////////////////////////////////////////////////
public SQLiteValue GetConflictValue(
int columnIndex
)
{
CheckDisposed();
CheckIterator();
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}
}
#endregion
///////////////////////////////////////////////////////////////////////
#region ISQLiteChangeSetMetadataItem Members
/// <summary>
/// Backing field for the <see cref="TableName" /> property. This value
/// will be null if this field has not yet been populated via the
/// underlying native API.
/// </summary>
private string tableName;
/// <summary>
/// The name of the table the change was made to.
/// </summary>
public string TableName
{
get
{
CheckDisposed();
PopulateOperationMetadata();
return tableName;
}
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Backing field for the <see cref="NumberOfColumns" /> property. This
/// value will be null if this field has not yet been populated via the
/// underlying native API.
/// </summary>
private int? numberOfColumns;
/// <summary>
/// The number of columns impacted by this change. This value can be
/// used to determine the highest valid column index that may be used
/// with the <see cref="GetOldValue" />, <see cref="GetNewValue" />,
/// and <see cref="GetConflictValue" /> methods of this interface. It
/// will be this value minus one.
/// </summary>
public int NumberOfColumns
{
get
{
CheckDisposed();
PopulateOperationMetadata();
return (int)numberOfColumns;
}
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Backing field for the <see cref="OperationCode" /> property. This
/// value will be null if this field has not yet been populated via the
/// underlying native API.
/// </summary>
private SQLiteAuthorizerActionCode? operationCode;
/// <summary>
/// This will contain the value
/// <see cref="SQLiteAuthorizerActionCode.Insert" />,
/// <see cref="SQLiteAuthorizerActionCode.Update" />, or
/// <see cref="SQLiteAuthorizerActionCode.Delete" />, corresponding to
/// the overall type of change this item represents.
/// </summary>
public SQLiteAuthorizerActionCode OperationCode
{
get
{
CheckDisposed();
PopulateOperationMetadata();
return (SQLiteAuthorizerActionCode)operationCode;
}
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Backing field for the <see cref="Indirect" /> property. This value
/// will be null if this field has not yet been populated via the
/// underlying native API.
/// </summary>
private bool? indirect;
/// <summary>
/// Non-zero if this change is considered to be indirect (i.e. as
/// though they were made via a trigger or foreign key action).
/// </summary>
public bool Indirect
{
get
{
CheckDisposed();
PopulateOperationMetadata();
return (bool)indirect;
}
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Backing field for the <see cref="PrimaryKeyColumns" /> property.
/// This value will be null if this field has not yet been populated
/// via the underlying native API.
/// </summary>
private bool[] primaryKeyColumns;
/// <summary>
/// This array contains a <see cref="Boolean" /> for each column in
/// the table associated with this change. The element will be zero
/// if the column is not part of the primary key; otherwise, it will
/// be non-zero.
/// </summary>
public bool[] PrimaryKeyColumns
{
get
{
CheckDisposed();
PopulatePrimaryKeyColumns();
return primaryKeyColumns;
}
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Backing field for the <see cref="NumberOfForeignKeyConflicts" />
/// property. This value will be null if this field has not yet been
/// populated via the underlying native API.
/// </summary>
private int? numberOfForeignKeyConflicts;
/// <summary>
/// This method may only be called from within a
/// <see cref="SessionConflictCallback" /> delegate when the conflict
/// type is <see cref="SQLiteChangeSetConflictType.ForeignKey" />. It
/// returns the total number of known foreign key violations in the
/// destination database.
/// </summary>
public int NumberOfForeignKeyConflicts
{
get
{
CheckDisposed();
PopulateNumberOfForeignKeyConflicts();
return (int)numberOfForeignKeyConflicts;
}
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Queries and returns the original value of a given column for this
/// change. This method may only be called when the
/// <see cref="OperationCode" /> has a value of
/// <see cref="SQLiteAuthorizerActionCode.Update" /> or
/// <see cref="SQLiteAuthorizerActionCode.Delete" />.
/// </summary>
/// <param name="columnIndex">
/// The index for the column. This value must be between zero and one
/// less than the total number of columns for this table.
/// </param>
/// <returns>
/// The original value of a given column for this change.
/// </returns>
public SQLiteValue GetOldValue(
int columnIndex
)
{
CheckDisposed();
CheckIterator();
IntPtr pValue = IntPtr.Zero;
SQLiteErrorCode rc = UnsafeNativeMethods.sqlite3changeset_old(
iterator.GetIntPtr(), columnIndex, ref pValue);
return SQLiteValue.FromIntPtr(pValue);
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Queries and returns the updated value of a given column for this
/// change. This method may only be called when the
/// <see cref="OperationCode" /> has a value of
/// <see cref="SQLiteAuthorizerActionCode.Insert" /> or
/// <see cref="SQLiteAuthorizerActionCode.Update" />.
/// </summary>
/// <param name="columnIndex">
/// The index for the column. This value must be between zero and one
/// less than the total number of columns for this table.
/// </param>
/// <returns>
/// The updated value of a given column for this change.
/// </returns>
public SQLiteValue GetNewValue(
int columnIndex
)
{
CheckDisposed();
CheckIterator();
IntPtr pValue = IntPtr.Zero;
SQLiteErrorCode rc = UnsafeNativeMethods.sqlite3changeset_new(
iterator.GetIntPtr(), columnIndex, ref pValue);
return SQLiteValue.FromIntPtr(pValue);
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Queries and returns the conflicting value of a given column for
/// this change. This method may only be called from within a
/// <see cref="SessionConflictCallback" /> delegate when the conflict
/// type is <see cref="SQLiteChangeSetConflictType.Data" /> or
/// <see cref="SQLiteChangeSetConflictType.Conflict" />.
/// </summary>
/// <param name="columnIndex">
/// The index for the column. This value must be between zero and one
/// less than the total number of columns for this table.
/// </param>
/// <returns>
/// The conflicting value of a given column for this change.
/// </returns>
public SQLiteValue GetConflictValue(
int columnIndex
)
{
CheckDisposed();
CheckIterator();
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