EGL library lobLib

The lobLib system library provides support functions for large objects (BLOB and CLOB types).

The next table lists the functions in lobLib.

System function/Invocation Description

attachBlobToFile(blobVariable, fileName)

 Associates a specified file with a BLOB variable, but does not write to the file.

attachBlobToTempFile(blobVariable )

 Associates a unique, temporary system file with a BLOB variable, but does not write to the file.

attachClobToFile(clobVariable, fileName)

 Associates a specified file with a CLOB variable, but does not write to the file.

attachClobToTempFile(clobVariable )

 Associates a unique, temporary system file with a CLOB variable, but does not write to the file.

freeBlob(blobVariable)

 Releases the resources that a BLOB variable uses.

freeClob(clobVariable)

 Releases the resources that a CLOB variable uses.

result = getBlobLen(blobVariable )

 Returns the number of bytes in the value that a BLOB variable references.

result = getClobLen(clobVariable)

 Returns the number of characters that a CLOB variable references.

result = getStrFromClob(clobVariable)

 Returns a string that corresponds to the value that a CLOB variable references.

result = getSubStrFromClob(clobVariable,
pos, length)

Returns a substring from the value that a CLOB variable references.

loadBlobFromFile(blobVariable, fileName)

 Copies the data from a specified file to the memory area that a BLOB variable references.

loadClobFromFile(blobVariable, fileName)

 Copies the data from a specified file to a memory area that a CLOB variable references.

setClobFromString(clobVariable, str)

 Copies a string into the memory area that a CLOB variable references.

setClobFromStringAtPosition(clobVariable,
pos, str)

Copies a string into a memory area that a CLOB variable references, starting at a specified position in the memory area.

truncateBlob(blobVariable, length)

 Truncates the value that a BLOB variable references.

truncateClob(clobVariable, length)

 Truncates the value that a CLOB variable references.

updateBlobToFile(blobVariable, fileName)

 Copies the data that a BLOB variable references into a specified file.

updateClobToFile(blobVariable, fileName)

 Copies the data that a CLOB variable references into a specified file.

Compatibility

Table 1. Compatibility considerations for lobLib
PlatformIssue
COBOL generation Large object types BLOB and CLOB are not supported for COBOL generation.