JsonArray Lianja Reference Documentation

JsonArray

Current Version: 10.1.2

Represents a JSON array, which contains an ordered list of JSON values, where each value can be a string, number, JSON object, JSON array, true, false, or null.

Object Creation

loObject = createobject("CkJsonArray")

Properties

DebugLogFilePath
DebugLogFilePath As Character

If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.

Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.

Possible causes of hangs include:

  • A timeout property set to 0, indicating an infinite timeout.
  • A hang occurring within an event callback in the application code.
  • An internal bug in the Chilkat code causing the hang.

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EmitCompact
EmitCompact As Boolean
Introduced in version 9.5.0.64

If .T. then the Emit method outputs in the most compact form possible (a single-line with no extra whitespace). If .F., then emits with whitespace and indentation to make the JSON human-readable.

The default value is .T..

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EmitCrlf
EmitCrlf As Boolean
Introduced in version 9.5.0.64

If .T. then the Emit method uses CRLF line-endings when emitting the non-compact (pretty-print) format. If .F., then bare-LF's are emitted. (The compact format emits to a single line with no end-of-line characters.) Windows systems traditionally use CRLF line-endings, whereas Linux, Mac OS X, and other systems traditionally use bare-LF line-endings.

The default value is .T..

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LastErrorHtml
LastErrorHtml As Character (read-only)

Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorText
LastErrorText As Character (read-only)

Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorXml
LastErrorXml As Character (read-only)

Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastMethodSuccess
LastMethodSuccess As Boolean

Indicates the success or failure of the most recent method call: .T. means success, .F. means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages.

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Size
Size As Numeric (read-only)
Introduced in version 9.5.0.56

The number of JSON values in the array.

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VerboseLogging
VerboseLogging As Boolean

If set to .T., then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is .F.. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

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Version
Version As Character (read-only)

Version of the component/library, such as "10.1.0"

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Methods

AddArrayAt
AddArrayAt(index As Numeric) As Boolean
Introduced in version 9.5.0.56

Inserts a new and empty JSON array member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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AddBoolAt
AddBoolAt(index As Numeric, value As Boolean) As Boolean
Introduced in version 9.5.0.56

Inserts a new boolean member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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AddIntAt
AddIntAt(index As Numeric, value As Numeric) As Boolean
Introduced in version 9.5.0.56

Inserts a new integer member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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AddNullAt
AddNullAt(index As Numeric) As Boolean
Introduced in version 9.5.0.56

Inserts a new null member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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AddNumberAt
AddNumberAt(index As Numeric, numericStr As Character) As Boolean
Introduced in version 9.5.0.56

Inserts a new numeric member to the position indicated by index. The numericStr is an integer, float, or double already converted to a string in the format desired by the application. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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AddObjectAt
AddObjectAt(index As Numeric) As Boolean
Introduced in version 9.5.0.56

Inserts a new and empty JSON object member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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AddObjectCopyAt
AddObjectCopyAt(index As Numeric, jsonObj As CkJsonObject) As Boolean
Introduced in version 9.5.0.82

Inserts a copy of a JSON object to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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AddStringAt
AddStringAt(index As Numeric, value As Character) As Boolean
Introduced in version 9.5.0.56

Inserts a new string at the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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AddUIntAt
AddUIntAt(index As Numeric, value As Numeric) As Boolean
Introduced in version 9.5.0.96

Inserts a new unsigned integer member to the position indicated by index. To prepend, pass an index of 0. To append, pass an index of -1. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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AppendArrayItems
AppendArrayItems(jarr As CkJsonArray) As Boolean
Introduced in version 9.5.0.82

Appends the array items contained in jarr.

Returns .T. for success, .F. for failure.

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ArrayAt
ArrayAt(index As Numeric) As CkJsonArray
Introduced in version 9.5.0.56

Returns the JSON array that is the value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns .F. on failure

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BoolAt
BoolAt(index As Numeric) As Boolean
Introduced in version 9.5.0.56

Returns the boolean value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

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Clear
Clear()
Introduced in version 9.5.0.76

Deletes all array elements.

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DateAt
DateAt(index As Numeric, dateTime As CkDateTime) As Boolean
Introduced in version 9.5.0.73

Fills the dateTime with the date/time string located in the Nth array element. Indexing is 0-based (the 1st member is at index 0). Auto-recognizes the following date/time string formats: ISO-8061 Timestamp (such as "2009-11-04T19:55:41Z"), RFC822 date/time format (such as "Wed, 18 Apr 2018 15:51:55 -0400"), or Unix timestamp integers.

Returns .T. for success, .F. for failure.

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DeleteAt
DeleteAt(index As Numeric) As Boolean
Introduced in version 9.5.0.56

Deletes the array element at the given index. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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DtAt
DtAt(index As Numeric, bLocal As Boolean, dt As CkDtObj) As Boolean
Introduced in version 9.5.0.73

Fills the dt with the date/time string located in the Nth array element. If bLocal is .T., then dt is filled with the local date/time values, otherwise it is filled with the UTC/GMT values. Indexing is 0-based (the 1st member is at index 0). Auto-recognizes the following date/time string formats: ISO-8061 Timestamp (such as "2009-11-04T19:55:41Z"), RFC822 date/time format (such as "Wed, 18 Apr 2018 15:51:55 -0400"), or Unix timestamp integers.

Returns .T. for success, .F. for failure.

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Emit
Emit() As Character
Introduced in version 9.5.0.58

Writes the JSON array (rooted at the caller) and returns as a string.

Note: To control the compact/non-compact format, and to control the LF/CRLF line-endings, set the EmitCompact and EmitCrlf properties.

Returns .F. on failure

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EmitSb
EmitSb(sb As CkStringBuilder) As Boolean
Introduced in version 9.5.0.65

Writes the JSON array to the sb.

Note: To control the compact/non-compact format, and to control the LF/CRLF line-endings, set the EmitCompact and EmitCrlf properties.

Returns .T. for success, .F. for failure.

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FindObject
FindObject(name As Character, value As Character, caseSensitive As Boolean) As Numeric
Introduced in version 9.5.0.73

Return the index of the first object in the array where value of the field at name matches value. name is an object member name. The value is a value pattern which can use "*" chars to indicate zero or more of any char. If caseSensitive is .F., then the matching is case insenstive, otherwise it is case sensitive. Returns -1 if no matching string was found.

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FindString
FindString(value As Character, caseSensitive As Boolean) As Numeric
Introduced in version 9.5.0.73

Return the index of the first matching string in the array. The value is a value pattern which can use "*" chars to indicate zero or more of any char. If caseSensitive is .F., then the matching is case insenstive, otherwise it is case sensitive. Returns -1 if no matching string was found.

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IntAt
IntAt(index As Numeric) As Numeric
Introduced in version 9.5.0.56

Returns the integer value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

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IsNullAt
IsNullAt(index As Numeric) As Boolean
Introduced in version 9.5.0.56

Returns the .T. if the Nth array element is null, otherwise returns .F.. Indexing is 0-based (the 1st member is at index 0).

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Load
Load(jsonArray As Character) As Boolean
Introduced in version 9.5.0.64

Loads a JSON array from a string. A JSON array must begin with a "[" and end with a "]".

Note: The Load method causes the JsonArray to detach and become it's own JSON document. It should only be called on new instances of the JsonArray. See the example below.

Returns .T. for success, .F. for failure.

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LoadSb
LoadSb(sb As CkStringBuilder) As Boolean
Introduced in version 9.5.0.64

Loads a JSON array from a StringBuilder. A JSON array must begin with a "[" and end with a "]".

Note: The Load method causes the JsonArray to detach and become it's own JSON document. It should only be called on new instances of the JsonArray. See the example below.

Returns .T. for success, .F. for failure.

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ObjectAt
ObjectAt(index As Numeric) As CkJsonObject
Introduced in version 9.5.0.56

Returns the JSON object that is the value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns .F. on failure

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SetBoolAt
SetBoolAt(index As Numeric, value As Boolean) As Boolean
Introduced in version 9.5.0.56

Sets the boolean value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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SetIntAt
SetIntAt(index As Numeric, value As Numeric) As Boolean
Introduced in version 9.5.0.56

Sets the integer value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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SetNullAt
SetNullAt(index As Numeric) As Boolean
Introduced in version 9.5.0.56

Sets the Nth array element to the value of null. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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SetNumberAt
SetNumberAt(index As Numeric, value As Character) As Boolean
Introduced in version 9.5.0.56

Sets the numeric value of the Nth array element. The value is an integer, float, or double already converted to a string in the format desired by the application. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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SetStringAt
SetStringAt(index As Numeric, value As Character) As Boolean
Introduced in version 9.5.0.56

Sets the string value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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SetUIntAt
SetUIntAt(index As Numeric, value As Numeric) As Boolean
Introduced in version 9.5.0.96

Sets the unsigned integer value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns .T. for success, .F. for failure.

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StringAt
StringAt(index As Numeric) As Character
Introduced in version 9.5.0.56

Returns the string value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

Returns .F. on failure

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Swap
Swap(index1 As Numeric, index2 As Numeric) As Boolean
Introduced in version 9.5.0.76

Swaps the items at positions index1 and index2.

Returns .T. for success, .F. for failure.

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TypeAt
TypeAt(index As Numeric) As Numeric
Introduced in version 9.5.0.58

Returns the type of data at the given index. Possible return values are:

  1. string
  2. number
  3. object
  4. array
  5. boolean
  6. null
Returns -1 if no member exists at the given index.

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UIntAt
UIntAt(index As Numeric) As Numeric
Introduced in version 9.5.0.96

Returns the unsigned integer value of the Nth array element. Indexing is 0-based (the 1st member is at index 0).

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