From e4be1275c8206cf3b1395e327f310d3b35e3863a Mon Sep 17 00:00:00 2001
From: miker <miker@dcc99617-32d9-48b4-a31d-7c20da2025e4>
Date: Wed, 10 Mar 2010 01:16:44 +0000
Subject: [PATCH] functions for merging MARC records of the same type
git-svn-id: svn://svn.open-ils.org/ILS/trunk@15771 dcc99617-32d9-48b4-a31d-7c20da2025e4
---
Open-ILS/src/sql/Pg/002.schema.config.sql | 2 +-
.../0184.schema.vandelay.merge_functions.sql | 100 +++++++++++++++++++++
2 files changed, 101 insertions(+), 1 deletion(-)
create mode 100644 Open-ILS/src/sql/Pg/upgrade/0184.schema.vandelay.merge_functions.sql
diff --git a/Open-ILS/src/sql/Pg/002.schema.config.sql b/Open-ILS/src/sql/Pg/002.schema.config.sql
index ba73b9b74d..753124ec4e 100644
--- a/Open-ILS/src/sql/Pg/002.schema.config.sql
+++ b/Open-ILS/src/sql/Pg/002.schema.config.sql
@@ -51,7 +51,7 @@ CREATE TABLE config.upgrade_log (
install_date TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
);
-INSERT INTO config.upgrade_log (version) VALUES ('0183'); -- Scott McKellar
+INSERT INTO config.upgrade_log (version) VALUES ('0184'); -- miker
CREATE TABLE config.bib_source (
id SERIAL PRIMARY KEY,
diff --git a/Open-ILS/src/sql/Pg/upgrade/0184.schema.vandelay.merge_functions.sql b/Open-ILS/src/sql/Pg/upgrade/0184.schema.vandelay.merge_functions.sql
new file mode 100644
index 0000000000..451e7f6b3f
--- /dev/null
+++ b/Open-ILS/src/sql/Pg/upgrade/0184.schema.vandelay.merge_functions.sql
@@ -0,0 +1,100 @@
+
+BEGIN;
+
+INSERT INTO config.upgrade_log (version) VALUES ('0184'); -- miker
+
+CREATE OR REPLACE FUNCTION vandelay.add_field ( incumbent_xml TEXT, incoming_xml TEXT, field TEXT ) RETURNS TEXT AS $_$
+
+ use MARC::Record;
+ use MARC::File::XML;
+
+ my $incumbent_xml = shift;
+ my $incoming_xml = shift;
+ my $field_spec = shift;
+ $field_spec =~ s/\s+//g;
+
+ my $incumbent_r = MARC::Record->new_from_xml( $incumbent_xml );
+ my $incoming_r = MARC::Record->new_from_xml( $incoming_xml );
+
+ return $incumbent_xml unless ($incumbent_r && $incoming_r);
+
+ my @field_list = split(',', $field_spec);
+
+ my %fields;
+ for my $f (@field_list) {
+ if ($f =~ /^(.{3})(.*)$/) {
+ $fields{$1} = [ split('', $2) ];
+ }
+ }
+
+ for my $f ( keys %fields) {
+ if ( @{$fields{$f}} ) {
+ for my $from_field ($incoming_r->field( $f )) {
+ for my $to_field ($incumbent_r->field( $f )) {
+ my @new_sf = map { ($_ => $from_field->subfield($_)) } @{$fields{$f}};
+ $to_field->add_subfields( @new_sf );
+ }
+ }
+ } else {
+ my @new_fields = map { $_->clone } $incoming_r->field( $f );
+ $incumbent_r->insert_fields_ordered( @new_fields );
+ }
+ }
+
+ $incumbent_xml = $incumbent_r->as_xml_record;
+ $incumbent_xml =~ s/^<\?.+?\?>$//mo;
+ $incumbent_xml =~ s/\n//sgo;
+ $incumbent_xml =~ s/>\s+</></sgo;
+
+ return $incumbent_xml;
+
+$_$ LANGUAGE PLPERLU;
+
+CREATE OR REPLACE FUNCTION vandelay.strip_field ( xml TEXT, field TEXT ) RETURNS TEXT AS $_$
+
+ use MARC::Record;
+ use MARC::File::XML;
+
+ my $xml = shift;
+ my $r = MARC::Record->new_from_xml( $xml );
+
+ return $xml unless ($r);
+
+ my $field_spec = shift;
+ $field_spec =~ s/\s+//g;
+
+ my @field_list = split(',', $field_spec);
+
+ my %fields;
+ for my $f (@field_list) {
+ if ($f =~ /^(.{3})(.*)$/) {
+ $fields{$1} = [ split('', $2) ];
+ }
+ }
+
+ for my $f ( keys %fields) {
+ if ( @{$fields{$f}} ) {
+ $_->delete_subfield(code => $fields{$f}) for ($r->field( $f ));
+ } else {
+ $r->delete_field( $_ ) for ( $r->field( $f ) );
+ }
+ }
+
+ $xml = $r->as_xml_record;
+ $xml =~ s/^<\?.+?\?>$//mo;
+ $xml =~ s/\n//sgo;
+ $xml =~ s/>\s+</></sgo;
+
+ return $xml;
+
+$_$ LANGUAGE PLPERLU;
+
+CREATE OR REPLACE FUNCTION vandelay.replace_field ( incumbent_xml TEXT, incoming_xml TEXT, field TEXT ) RETURNS TEXT AS $_$
+ SELECT vandelay.add_field( vandelay.strip_field( $1, $3), $2, $3 );
+$_$ LANGUAGE SQL;
+
+CREATE OR REPLACE FUNCTION vandelay.preserve_field ( incumbent_xml TEXT, incoming_xml TEXT, field TEXT ) RETURNS TEXT AS $_$
+ SELECT vandelay.add_field( vandelay.strip_field( $2, $3), $1, $3 );
+$_$ LANGUAGE SQL;
+
+COMMIT;
--
2.11.0