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Make query mode silent for clean piping to pagers

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Remove all diagnostic output in query mode - no front matter, timestamps, or metadata. Query results go directly to stdout for seamless piping to visidata/pspg/less.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
Paul Trowbridge 2026-01-15 14:05:21 -05:00
parent 6c9b0f96a0
commit 1717c7ee2c
1 changed files with 16 additions and 22 deletions
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38
jrunner/src/main/java/jrunner/jrunner.java
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@ -136,12 +136,7 @@ public class jrunner {
// Detect query mode when destination flags are not provided // Detect query mode when destination flags are not provided
queryMode = dcu.isEmpty() && dcn.isEmpty() && dcp.isEmpty() && dt.isEmpty(); queryMode = dcu.isEmpty() && dcn.isEmpty() && dcp.isEmpty() && dt.isEmpty();
if (queryMode) { if (!queryMode) {
System.err.println("------------query mode------------------------------------");
System.err.println("source db uri: " + scu);
System.err.println("source db username: " + scn);
System.err.println("output format: " + outputFormat);
} else {
System.out.println("------------db info---------------------------------------"); System.out.println("------------db info---------------------------------------");
System.out.println("source db uri: " + scu); System.out.println("source db uri: " + scu);
System.out.println("source db username: " + scn); System.out.println("source db username: " + scn);
@ -165,9 +160,7 @@ public class jrunner {
//-------------------------------------------establish connections------------------------------------------------- //-------------------------------------------establish connections-------------------------------------------------
//source database //source database
if (queryMode) { if (!queryMode) {
System.err.println("------------open database connection---------------------");
} else {
System.out.println("------------open database connections---------------------"); System.out.println("------------open database connections---------------------");
} }
try { try {
@ -176,8 +169,10 @@ public class jrunner {
System.out.println("issue connecting to source:"); System.out.println("issue connecting to source:");
e.printStackTrace(); e.printStackTrace();
System.exit(0); System.exit(0);
} }
System.out.println(" ✅ source database"); if (!queryMode) {
System.out.println(" ✅ source database");
}
//destination database //destination database
if (!queryMode) { if (!queryMode) {
try { try {
@ -194,7 +189,9 @@ public class jrunner {
stmt = scon.createStatement(); stmt = scon.createStatement();
stmt.setFetchSize(10000); stmt.setFetchSize(10000);
tsStart = Timestamp.from(Instant.now()); tsStart = Timestamp.from(Instant.now());
System.out.println(tsStart); if (!queryMode) {
System.out.println(tsStart);
}
rs = stmt.executeQuery(sq); rs = stmt.executeQuery(sq);
//while (rs.next()) { //while (rs.next()) {
// System.out.println(rs.getString("x")); // System.out.println(rs.getString("x"));
@ -208,8 +205,10 @@ public class jrunner {
//---------------------------------------build meta--------------------------------------------------------------- //---------------------------------------build meta---------------------------------------------------------------
try { try {
cols = rs.getMetaData().getColumnCount(); cols = rs.getMetaData().getColumnCount();
System.out.println("------------source metadata-------------------------------"); if (!queryMode) {
System.out.println("number of cols: " + cols); System.out.println("------------source metadata-------------------------------");
System.out.println("number of cols: " + cols);
}
getv = new String[cols + 1]; getv = new String[cols + 1];
dtn = new String[cols + 1]; dtn = new String[cols + 1];
} catch (SQLException e) { } catch (SQLException e) {
@ -219,7 +218,9 @@ public class jrunner {
try { try {
for (int i = 1; i <= cols; i++){ for (int i = 1; i <= cols; i++){
dtn[i] = rs.getMetaData().getColumnTypeName(i); dtn[i] = rs.getMetaData().getColumnTypeName(i);
System.out.println(" * " + rs.getMetaData().getColumnName(i) + ": " + dtn[i]); if (!queryMode) {
System.out.println(" * " + rs.getMetaData().getColumnName(i) + ": " + dtn[i]);
}
} }
} catch (SQLException e) { } catch (SQLException e) {
e.printStackTrace(); e.printStackTrace();
@ -418,15 +419,8 @@ public class jrunner {
outputTSV(rs, cols); outputTSV(rs, cols);
break; break;
case "table": case "table":
System.err.println("Table format not yet implemented, defaulting to CSV");
outputCSV(rs, cols);
break;
case "json": case "json":
System.err.println("JSON format not yet implemented, defaulting to CSV");
outputCSV(rs, cols);
break;
default: default:
System.err.println("Unknown format: " + format + ", defaulting to CSV");
outputCSV(rs, cols); outputCSV(rs, cols);
break; break;
} }