Made changes to generate-sql. Do not understand how we copy from

generated-sources to /src/main/resources but the generation has fixed
all of the same bugs that were manually fixed in /src/main/resources
including the preferred approach, drop contraints for postgresql.

spring-batch-core/src/main/sql/drop.constraints.sql.vpp

@@ -0,0 +1,7 @@
+ALTER TABLE BATCH_JOB_INSTANCE DROP CONSTRAINT ${IFEXISTSBEFORE} JOB_INST_UN;
+ALTER TABLE BATCH_JOB_EXECUTION DROP CONSTRAINT ${IFEXISTSBEFORE} JOB_INST_EXEC_FK;
+ALTER TABLE BATCH_JOB_EXECUTION_PARAMS DROP CONSTRAINT ${IFEXISTSBEFORE} JOB_EXEC_PARAMS_FK;
+ALTER TABLE BATCH_STEP_EXECUTION DROP CONSTRAINT ${IFEXISTSBEFORE} JOB_EXEC_STEP_FK;
+ALTER TABLE BATCH_STEP_EXECUTION_CONTEXT DROP CONSTRAINT ${IFEXISTSBEFORE} STEP_EXEC_CTX_FK;
+ALTER TABLE BATCH_JOB_EXECUTION_CONTEXT DROP CONSTRAINT ${IFEXISTSBEFORE} JOB_EXEC_CTX_FK;
+

spring-batch-core/src/main/sql/postgresql.properties

@@ -3,6 +3,7 @@ platform=postgresql
 BIGINT = BIGINT
 IDENTITY = 
 GENERATED = 
+IFEXISTSBEFORE = IF EXISTS
 DOUBLE = DOUBLE PRECISION
 BLOB = BYTEA
 CLOB = TEXT

spring-batch-core/src/main/sql/sqlf.properties

@@ -0,0 +1,13 @@
+platform=sqlfire
+# SQL language oddities (cloned from Derby)
+BIGINT = BIGINT
+IDENTITY = 
+GENERATED = GENERATED BY DEFAULT AS IDENTITY
+IFEXISTSBEFORE = IF EXISTS
+DOUBLE = DOUBLE PRECISION
+BLOB = BLOB
+CLOB = CLOB
+TIMESTAMP = TIMESTAMP
+VARCHAR = VARCHAR
+# for generating drop statements...
+SEQUENCE = TABLE

spring-batch-core/src/main/sql/sqlf.vpp

@@ -0,0 +1,3 @@
+#macro (sequence $name $value)CREATE TABLE ${name} (ID BIGINT  PRIMARY KEY GENERATED BY DEFAULT AS IDENTITY, DUMMY VARCHAR(1));
+#end
+#macro (notnull $name $type)ALTER COLUMN ${name} NOT NULL#end